Our senior pets are special and therefore deserve special treatment. As our pet ages, their health needs change. Typically, once pets are 7 years old or older, they're considered seniors. And as your pet ages, you may start noticing some lifestyle or behavior changes that could signal a problem or need attention. If you notice any of these signs in your pet, give your veterinarian a call. Any changes in skin, appetite, urination, new lumps or bumps, trouble getting up or down, bad breath, etc.