We have 3 dogs and decided to get the biggest one the large casper mattress when I got my Casper mattress. He has not stayed in the bed much because he prefers sleeping on MY mattress, but when he is not in my room he loves his bed! Also, he has barely dropped the toy that came along with the bed and has (so far) not been able to destroy it, which is a miracle in itself. Thanks Casper!