Pet health tools
Free vet-built tools and calculators
Pet-care calculators built and reviewed by Dr. Tiffany Delacruz, DVM, CEO of RexVet. No sign-up. No paywall. Just the answers pet parents ask their vets every day — most of which can be calculated in seconds with the right tool.
~90,000 searches/mo
Dog Age Calculator
Convert your dog's age to human years using the modern epigenetic formula — more accurate than the old "multiply by 7" myth.
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Vet-reviewed
Pet Weight Calculator
Calculate your pet's ideal weight by breed and life stage, and learn whether your pet is under, ideal, or overweight (Body Condition Score).
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~30,000 searches/mo
Dog Vaccine Schedule
Interactive vaccine schedule based on AAHA 2025 guidelines. Pick your dog's age + lifestyle to see exactly which vaccines are due now.
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~12,000 searches/mo
Pet Calorie Calculator
Daily caloric needs for your dog or cat using the RER × life-stage formula vets use. Most food bag charts overfeed by 20-30%.
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Vet reference
Medication Dose by Weight
Reference for common pet medications dosed by weight class — from gabapentin to NSAIDs to flea preventatives.
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Get care for your pet in Florida, New York, or Virginia
$64.99 video visit with a licensed vet — same-day prescriptions and RexVetRx delivery in the states we serve.
Florida Online Vet
Licensed FL vet by video — $64.99 visits, RexVetRx delivery.
New York Online Vet
Licensed NY vet by video — for all 5 boroughs and upstate.
Virginia Online Vet
Licensed VA vet by video — Hampton Roads, NoVA, Richmond.
Family Plan — $120/yr
4 visits + unlimited messaging for every pet in your home.
Browse more RexVet guides
Reviewed by Dr. Tiffany Delacruz, DVM — written for pet parents in Florida, New York, and Virginia.
Online Vet (Overview)
How an online vet visit works and what we treat.
Online Vet by City
FL, NY, and VA city-level vet care landers (89 cities).
Online Pet Prescriptions
Same-day Rx, delivery, and local-pharmacy pickup.
Pet Medications A–Z
Reference guide to common dog & cat medications.
Medication Dosage by Weight
Dosage guides for top drugs across 6 dog and 4 cat weight classes.
Breed Health Guides
Diagnosed conditions in 21 dog and 10 cat breeds.
Symptoms by Breed
Symptom guides for top dog breeds.
Symptoms by City
Dog & cat symptom guides for 24 top FL/NY/VA cities.
2026 Pet Care Costs
What pet care actually costs, by procedure & state.
Pet Insurance Compared
Compare top plans alongside RexVet's flat pricing.
Online vs In-Person Cost
Real cost comparison for 10 common vet scenarios across FL/NY/VA.
Online Vet Near Me
How licensed-by-state telehealth actually works for FL, NY, VA pet parents.
Online Vet for Dogs
Licensed video visits, prescriptions, and chronic care for dogs.
Online Vet for Cats
Carrier-free feline care with licensed cat-savvy veterinarians.
Pet Health Library
Vet-authored guides on seasonal pet hazards, anxiety, and emergencies.
Pet Health Glossary
Plain-English definitions for 32 common vet medicine terms.