Many pet owners ask, “At what age is a dog or cat considered ‘senior’?” As pets enter their senior years, their physiology and nutritional requirements undergo significant changes. This guide explores how “senior” is defined for dogs and cats, outlines key care priorities for senior pets, and provides targeted recommendations to support joint, kidney, and immune health. With proactive veterinary care, age-appropriate nutrition, and thoughtful home adjustments, you can help extend your pet’s healthy lifespan—keeping them active, comfortable, and thriving throughout their golden years.
