New Puppy Vet Checklist: What to Do in the First 30 Days

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New Puppy Vet Checklist: First 30 Days Priorities

Bringing home a new puppy is one of life's greatest joys — and one of its biggest responsibilities. The first 30 days set the foundation for your dog's entire life of health. According to the American Veterinary Medical Association (AVMA), the American Animal Hospital Association (AAHA), and the American Kennel Club (AKC), proactive veterinary care during this critical window dramatically reduces the risk of infectious disease, parasitic illness, and developmental problems that can affect your puppy for years to come.

This comprehensive checklist walks you through every veterinary priority during your puppy's first month at home — from that all-important initial exam to vaccinations, parasite prevention, and the warning signs that demand immediate attention.

The First Veterinary Visit: Within 48–72 Hours

The AVMA and most veterinary professionals recommend scheduling your puppy's first veterinary exam within 48 to 72 hours of bringing them home. This narrow window is not arbitrary — shelter and breeder environments can expose puppies to infectious agents whose incubation periods may not manifest until after the stress of transition to a new home.

What to Expect at the First Exam

Your veterinarian will perform a thorough nose-to-tail physical examination and establish a baseline health record. Expect the following during this initial visit:

• Complete physical exam: Assessment of body condition score, weight, temperature, heart rate, respiratory rate, eyes, ears, teeth, gums, lymph nodes, abdomen, joints, and coat condition
• Congenital defect screening: Checking for umbilical hernias, undescended testicles (cryptorchidism), heart murmurs, cleft palate, and limb deformities
• Fecal sample analysis: Testing for intestinal parasites including roundworms, hookworms, whipworms, giardia, and coccidia
• Vaccination review: Assessment of any vaccines already administered and planning the remaining series
• Nutritional assessment: Evaluation of current diet, feeding schedule, and growth trajectory
• Behavioral discussion: Socialization windows, house training, bite inhibition, and crate training guidance

What to Bring to the First Visit

• Any medical records from the breeder, shelter, or rescue organization
• A fresh stool sample (less than 12 hours old, stored in a sealed container in the refrigerator)
• A list of the puppy's current food, treats, and supplements
• A written list of questions and concerns
• Information about the puppy's known littermates and parents if available

Core Vaccination Schedule

The AAHA Canine Vaccination Guidelines classify vaccines into two categories: core (essential for every dog regardless of lifestyle) and non-core (recommended based on geographic location and exposure risk). The following core vaccine schedule represents the current standard of care in 2026.

DHPP (Distemper, Hepatitis, Parainfluenza, Parvovirus)

The DHPP combination vaccine — sometimes called DAPP or DA2PP — protects against four potentially fatal viral diseases. Maternal antibodies gradually wane between 6 and 16 weeks of age, which is why a series of boosters is required rather than a single shot.

• First dose: 6–8 weeks of age
• Second dose: 10–12 weeks of age
• Third dose: 14–16 weeks of age
• Booster: 1 year after the final puppy dose, then every 3 years

Puppies adopted at 8 weeks typically need two to three DHPP boosters at 3–4 week intervals. Those acquired at 12 weeks may only need one additional booster. The final dose should never be given before 16 weeks of age to ensure maternal antibody interference has resolved.

Rabies Vaccine

Rabies vaccination is required by law in all 50 U.S. states. It is a core vaccine because rabies is uniformly fatal and poses a direct public health risk to humans.

• First dose: 12–16 weeks of age (varies by state; most require by 16 weeks)
• Booster: 1 year after initial vaccination
• Subsequent boosters: Every 1–3 years depending on vaccine type and local regulations

The rabies vaccine is typically administered at the same visit as the final DHPP booster, usually around 14–16 weeks of age.

Non-Core (Lifestyle) Vaccines

Non-core vaccines are recommended based on your puppy's anticipated lifestyle, geographic region, and exposure risk. Discuss these with your veterinarian during the first visit to determine which are appropriate.

Bordetella (Kennel Cough)

Bordetella bronchiseptica causes highly contagious respiratory infection. This vaccine is strongly recommended for any puppy who will attend puppy classes, visit dog parks, use grooming services, or be boarded.

• First dose: As early as 8 weeks (intranasal) or 6–8 weeks (injectable)
• Booster: 2–4 weeks after initial dose for injectable; single dose sufficient for intranasal
• Maintenance: Every 6–12 months depending on exposure risk

Leptospirosis

Leptospirosis is a bacterial disease transmitted through contaminated water and wildlife urine. It is increasingly common in suburban and urban environments and is zoonotic (transmissible to humans).

• First dose: 12 weeks of age or older
• Booster: 2–4 weeks after initial dose
• Maintenance: Annually

Lyme Disease

The Lyme vaccine is recommended for puppies living in or traveling to endemic areas (primarily the Northeast, Upper Midwest, and Pacific Coast of the United States).

• First dose: 12 weeks of age or older
• Booster: 2–4 weeks after initial dose
• Maintenance: Annually, ideally before tick season

Canine Influenza (H3N2/H3N8)

Recommended for dogs in areas with documented outbreaks or those with high social exposure (boarding, daycare, shows).

• First dose: 8 weeks of age or older
• Booster: 2–4 weeks after initial dose
• Maintenance: Annually

Deworming Schedule

Intestinal parasites are extraordinarily common in puppies. The Centers for Disease Control and Prevention (CDC) and the Companion Animal Parasite Council (CAPC) report that nearly all puppies are born with or acquire roundworms and hookworms from their mothers. The AAHA recommends aggressive early deworming because these parasites can cause anemia, poor growth, and are transmissible to humans — especially children.

Standard Puppy Deworming Protocol

• 2 weeks: First deworming (pyrantel pamoate)
• 4 weeks: Second deworming (pyrantel pamoate)
• 6 weeks: Third deworming (pyrantel pamoate or fenbendazole)
• 8 weeks: Fourth deworming (pyrantel pamoate or fenbendazole)
• 10 weeks: Fifth deworming
• 12 weeks: Sixth deworming; begin monthly heartworm/intestinal parasite combination product

Common deworming medications include pyrantel pamoate (effective against roundworms and hookworms), fenbendazole (broad-spectrum including whipworms and some tapeworms), and praziquantel (tapeworm-specific). If your puppy arrives home at 8 weeks, expect your veterinarian to administer a dewormer at the first visit and schedule follow-up treatments at 2-week intervals.

Heartworm Prevention

Heartworm disease, transmitted by mosquitoes, is fatal if untreated and expensive to treat. The American Heartworm Society (AHS) and AAHA recommend year-round prevention for all dogs in the United States.

• Start age: As early as 6–8 weeks of age (no heartworm test required for puppies under 7 months)
• Frequency: Monthly, year-round
• Common products: Ivermectin-based (Heartgard), milbemycin oxime (Interceptor), selamectin (Revolution), or combination products that also cover intestinal parasites (Heartgard Plus, Interceptor Plus, Simparica Trio)
• First heartworm test: At 7 months of age or as directed by your veterinarian

Starting heartworm prevention during the first 30 days home is one of the most impactful things you can do for your puppy's long-term health. Even indoor dogs are at risk — mosquitoes enter homes, and a single bite from an infected mosquito can transmit heartworm larvae.

Flea and Tick Prevention

Fleas and ticks carry diseases including Lyme disease, ehrlichiosis, anaplasmosis, and tapeworms. The AAHA recommends starting age-appropriate flea and tick prevention as soon as a puppy's weight permits.

• Start age: Varies by product — some are safe from 4 weeks (topical), others from 8 weeks (oral)
• Weight requirement: Most oral products require minimum 2–4 lbs body weight
• Frequency: Monthly for most products; some oral products offer 12-week protection
• Popular options: Fluralaner (Bravecto), afoxolaner (NexGard), sarolaner (Simparica), or topical options like fipronil (Frontline) for very young puppies

Consult your veterinarian about which product is safest for your puppy's specific age, weight, and breed. Never use dog-specific products on cats in the same household, and never use products containing permethrin around cats.

Microchipping

Microchipping is a quick, minimally invasive procedure that implants a rice-grain-sized identification chip between the puppy's shoulder blades. It is the most reliable permanent form of identification and dramatically increases the likelihood of reunion if your dog is ever lost.

• Recommended timing: Can be performed at any age; most veterinarians recommend during the first or second puppy visit (8–12 weeks)
• Procedure: Takes less than 30 seconds; no anesthesia required
• Critical step: Register the microchip with the manufacturer's database AND a universal registry (such as the AAHA Universal Pet Microchip Lookup) with your current contact information
• Maintenance: Have the chip scanned annually at vet visits to confirm it remains functional and has not migrated

According to the AVMA, microchipped dogs are returned to their owners 52.2% of the time compared to just 21.9% for dogs without chips. Registration is essential — an unregistered chip is nearly useless.

Spay/Neuter Timing

While spaying or neutering typically occurs after the first 30 days, this is an important conversation to begin at your puppy's first veterinary visit. The AAHA and veterinary orthopedic specialists now recommend size-specific timing based on recent research linking early sterilization to orthopedic and oncologic risks in large breeds.

• Small breeds (under 45 lbs adult weight): 6 months for females (before first heat); 6 months for males
• Large breeds (over 45 lbs adult weight): Wait until growth plates close — typically 9–15 months for females; 9–18 months for males
• Shelter protocol: Many shelters spay/neuter before adoption (as early as 8 weeks) due to population control mandates

Your veterinarian will help you determine the optimal timing based on your puppy's breed, projected adult size, and individual health factors. Research published in recent years suggests that early neutering in large breeds may increase the risk of cranial cruciate ligament tears, hip dysplasia, and certain cancers.

Baseline Bloodwork and Fecal Testing

Fecal Testing

A fecal flotation and giardia antigen test should be performed at the first veterinary visit, even if your puppy has already been dewormed. The CAPC recommends fecal testing 2–4 times during the first year of life.

• Fecal flotation: Detects roundworms, hookworms, whipworms, and coccidia eggs
• Giardia antigen test (ELISA): More sensitive than flotation for detecting this common protozoan parasite
• Follow-up testing: Repeat at each puppy vaccine visit until results are consistently negative

Baseline Bloodwork

While not always standard for every puppy, baseline bloodwork may be recommended in certain circumstances:

• Before anesthesia: If early spay/neuter or other surgical procedures are planned
• Breed-specific screening: Some breeds have known hereditary conditions that benefit from early baselines
• Clinical concerns: If the puppy presents with lethargy, poor appetite, pale gums, or failure to thrive
• Components typically assessed: Complete blood count (CBC), blood glucose, liver enzymes (ALT, ALP), kidney function (BUN, creatinine), and total protein

Establishing baseline values while your puppy is healthy provides invaluable comparison data if illness arises later in life. Many veterinarians now recommend a baseline CBC and chemistry panel at the 6-month wellness visit even in apparently healthy puppies.

Nutrition Counseling

Proper nutrition during the first months of life directly impacts skeletal development, immune function, and lifelong eating habits. Your first veterinary visit should include a detailed nutritional assessment and personalized feeding plan.

Key Topics to Discuss with Your Veterinarian

• Life-stage appropriate food: AAFCO-certified "growth" or "all life stages" formula specifically formulated for puppies (not adult maintenance diets)
• Large-breed specific formulas: Puppies projected to reach over 70 lbs adult weight require diets with controlled calcium and phosphorus ratios (1.1:1 to 1.4:1) to prevent developmental orthopedic disease
• Feeding frequency: Three to four meals daily from 8–12 weeks; transition to twice daily between 4–6 months
• Portion guidance: Based on projected adult weight, current body condition score, and activity level — not simply the bag recommendation
• Transition protocol: If changing foods, mix gradually over 7–10 days (25% new / 75% old → 50/50 → 75% new / 25% old) to prevent gastrointestinal upset
• Foods to avoid: Grapes, raisins, chocolate, xylitol, onions, garlic, macadamia nuts, raw bread dough, and cooked bones

Growth Rate Monitoring

Your veterinarian will track your puppy's growth curve at each visit. Overfeeding is a far more common problem than underfeeding in modern puppy care, and excess weight during growth significantly increases the risk of hip dysplasia, elbow dysplasia, and cruciate ligament disease. You should be able to feel (but not prominently see) your puppy's ribs, and they should have a visible waist when viewed from above.

Dental Care Introduction

Dental disease affects over 80% of dogs by age three, and the foundation for lifelong oral health is established during puppyhood. While puppies have deciduous (baby) teeth that will be replaced between 3–7 months of age, introducing dental care during the first 30 days takes advantage of the critical socialization window.

First 30 Days Dental Priorities

• Mouth handling: Gently lift lips and touch gums daily to build positive associations — this makes future tooth brushing and veterinary dental exams dramatically easier
• Toothpaste introduction: Offer enzymatic dog toothpaste (never human toothpaste, which contains fluoride and xylitol) on your finger as a treat; poultry or malt flavors are most readily accepted
• Chew habit formation: Provide age-appropriate dental chews and rubber toys designed for puppy teeth (softer than adult versions)
• Deciduous tooth monitoring: Note when baby teeth begin loosening; retained deciduous teeth (common in small breeds) require veterinary extraction to prevent adult tooth misalignment

Veterinary Dental Assessment

Your veterinarian will examine your puppy's bite (occlusion) at the first visit to identify malocclusions, retained deciduous teeth, or oral defects such as cleft palate. Brachycephalic breeds (Bulldogs, Pugs, Boston Terriers) require particular attention due to crowding and jaw structure predispositions to dental disease.

Emergency Signs Requiring Immediate Veterinary Attention

Puppies can deteriorate remarkably quickly due to their small size, immature immune systems, and limited metabolic reserves. The AKC and AVMA identify the following warning signs as emergencies requiring immediate veterinary evaluation — do not wait until the next scheduled appointment:

Critical Warning Signs

• Vomiting or diarrhea with blood: Especially dark, tarry stools (melena) or bright red blood (hematochezia); may indicate parvovirus, hemorrhagic gastroenteritis, or intestinal obstruction
• Repeated vomiting (more than twice in 24 hours): Puppies dehydrate rapidly; vomiting combined with lethargy is a parvovirus hallmark
• Refusal to eat for more than 12 hours: Puppies have minimal glycogen reserves and can develop hypoglycemia within hours
• Lethargy or weakness: Particularly collapse, inability to stand, or unresponsiveness — in toy breeds this may signal life-threatening hypoglycemia
• Difficulty breathing: Open-mouth breathing, blue-tinged gums (cyanosis), persistent coughing, or labored abdominal breathing
• Seizures or tremors: Any episode of uncontrolled shaking, paddling, or loss of consciousness
• Abdominal distension: Bloated, painful, or rigid abdomen — may indicate gastric dilatation-volvulus (bloat), intestinal obstruction, or internal bleeding
• Pale or white gums: Indicates anemia, shock, or internal hemorrhage; normal puppy gums are bubblegum pink
• Fever over 103.5°F (39.7°C) or hypothermia below 99°F (37.2°C): Normal puppy temperature is 100–102.5°F (37.8–39.2°C)
• Trauma: Falls, being stepped on, car accidents, or animal attacks — even if the puppy appears fine externally
• Known toxin ingestion: Chocolate, xylitol, rodenticide, human medications, antifreeze, or toxic plants — bring the packaging to the emergency clinic
• Inability to urinate or defecate: Straining without production may indicate urinary obstruction or severe constipation

Preparing for Emergencies

During the first 30 days, program the following numbers into your phone and post them visibly in your home:

• Your primary veterinarian's office and after-hours line
• The nearest 24-hour emergency veterinary hospital (note address and driving time)
• ASPCA Animal Poison Control: (888) 426-4435
• Pet Poison Helpline: (855) 764-7661

Keep a basic canine first aid kit stocked with gauze, self-adhesive bandage wrap, digital thermometer, hydrogen peroxide (3%, for veterinarian-directed emesis only), saline eye wash, and styptic powder. Never administer human medications — acetaminophen, ibuprofen, and aspirin are toxic to dogs at human doses.

Building Your Puppy's Care Calendar

The most successful new puppy owners treat veterinary care as a scheduled project rather than a reactive response. Before your first visit ends, request a printed or digital care calendar that maps out every appointment for the next six months. A well-structured first-year plan typically includes:

• Initial wellness exam (within 72 hours of adoption)
• Three to four DHPP booster visits at 3–4 week intervals
• Rabies vaccination at 12–16 weeks
• Monthly heartworm and flea/tick prevention refills
• 6-month wellness exam with baseline bloodwork
• Spay/neuter consultation and scheduling
• 1-year comprehensive annual exam

Final Thoughts

The first 30 days with a new puppy are intense, joyful, and consequential. Every veterinary decision you make during this window — from vaccination timing to parasite prevention to nutritional planning — compounds over your dog's lifetime. Following the evidence-based guidelines established by the AVMA, AAHA, and AKC gives your puppy the strongest possible foundation for a long, healthy life.

Remember that your veterinarian is your partner in this journey. No question is too small, and no concern is too minor to warrant a phone call. The puppies who thrive are those whose owners engage proactively with veterinary care rather than waiting for problems to appear. Welcome to the adventure of puppy parenthood — your future healthy adult dog is being built right now, one thoughtful decision at a time.