First time cat owner

I recently brought home Cinder, and been loving it! I’m coming from having a GSD who passed away earlier this year, and I couldn’t have chosen a better breed to fulfill that companionship I’ve been missing.

This guy has a bottomless stomach , 3.5 months old and he’s eating 2 3oz cans of Orijen wet food plus open feed dry food a day. Is this normal ?

I was warned by some coworkers who own cats that cats aren’t like dogs , and I may be disappointed if that’s what I was looking for. Cinder acts more like a dog than some dogs I’ve been around, follows me everywhere , fetch’s , lays on top of me , etc… could not be happier with my lil guy.