Pet Life Stages: The Complete Health Guide

A pet's health needs shift meaningfully across their life, from the intensive early puppy/kitten period through adulthood and into the senior years. This page organizes the full set of life-stage guides so you can find what's relevant to where your pet is right now.

Puppy First 30 days checklist · Vaccination schedule · When to spay/neuter · Growth milestones · Common health problems · Teething · Socialization windows · Nutrition · First vet visit timing · Puppy-proofing

Kitten First 30 days checklist · Vaccination schedule · When to spay/neuter · Growth milestones · Common health problems · Teething & dental development · Litter box training · Nutrition · First vet visit timing · Kitten-proofing

Adult Dog wellness visits · Cat wellness visits · Weight management (dogs) · Weight management (cats) · Dental health · Early signs of illness · Exercise needs by breed size · Indoor cat enrichment · Adult nutrition · Annual bloodwork

Senior When is a dog senior · When is a cat senior · Senior wellness screening · Cognitive decline (dogs) · Cognitive decline (cats) · Arthritis early signs · Senior nutrition · Managing multiple chronic conditions · Quality of life assessments · End-of-life conversations

General & multi-species Multi-pet households, different life stages · Adopting an adult or senior pet · Transitioning life-stage foods · How breed size affects aging · Spay/neuter long-term considerations · Indoor vs. outdoor by life stage · Building a lifetime health record · How often to see the vet · Normal aging vs. a health problem

If a specific symptom is your immediate concern rather than general life-stage planning, here's the GI symptoms guide and the respiratory symptoms guide. If travel is part of your pet's life at any stage, here's the complete RV & travel guide.