Dear 100 Hour Board,
How is it that pet food companies consider my cat a senior at age 7, when cats live an average of 15 years? So he's supposed to be a senior for half his life?
-Not a crazy cat lady
As senior cat foods are generally more expensive than normal cat foods, it advantageous for companies if you are persuaded to consider your cat a senior sooner.
Skepticism aside, this veterinary medicine website does suggest "as a general rule of thumb, a cat who is 8 to 10 years old and older should be considered middle to senior aged, and a consultation with your vet is in order to determine the best health care maintenance program for your cat as s/he ages." Of course, this depends from cat to cat.