Nevermind, I think the problem is that you’re only able to learn 1 of each pet instead of 3, and pets don’t tell you if they’re already learned.
Topic is irrelevant now and can be deleted, false alarm 
Hey Squander! What’s your total pet count in the pet collection in 4.4.1?
Hiya! My 4.4.1 Total Pet Count is 20.
EDIT:
Nevermind, I think the problem is that you’re only able to learn 1 of each pet instead of 3, and pets don’t tell you if they’re already learned.
Topic is irrelevant now and can be deleted, false alarm