Dogs older than 8 years and cats older than 10 years of age are recommended to have regular health checks. This may include a simple blood test which will give us information about the internal organ function of your pet. Older dogs and cats suffer from osteoarthritis more than you may think, so watch your pet closely: Does your dog hesitate getting up in the morning? Does cold weather affect activity? Is your cat using a chair in between to reach the tabletop? These could all be signs of osteoarthritis and your pet may benefit from treatment to make them more comfortable.