The phrase "older pooch" refers to a dog that is no longer young or a puppy. It means a canine that is in the later stages of its life. Full definition
We're sending this brave 5 - year old pooch undercover into a place dogs fear the most — the veterinary clinic. (abcnews.go.com)
In the News: Rupee, an 11 month old pooch, has done something no dog has done before. (educationworld.com)
«A senior dog has a lower inclination to work, so always encourage your dog as much as possible,» Wee Boon says, emphasising the importance of providing rewards for older pooches. (petsmagazine.com.sg)