The phrase "older pups" refers to young dogs that are no longer considered puppies, but are still not fully grown adults.
Sentences with «older pups»
I have one 8 - month old pup who just recently started chewing on my leather furniture. (caninejournal.com)
Any 8 - week - old pup who is confident enough to push back at an adult needs help making other choices. (mysmartpuppy.com)
This roundup of puppy toys includes some designed specifically with the teething puppy in mind, but many also work for older pups for play and chewing delight. (thesprucepets.com)