Is there a maximum amount of slots you can have in a pet's treasure chest, or can you hypothetically keep buying boxes to increase indefinitely?

Thanks! :D

I never heard of a limit and I've seen a Pet with more than 700 items in their treasure chest so I think you don't have to worry that much about capacity. =D

Whoah, 700 items? I don't think I'll ever get THAT far! That answers my question... thanks :D

There is some limit, I think it's around 1000 right now. But when I hit the old limit before I just had Keith fix it. XD