My dog, Sarge, is about 50 lbs. My six month old kitten, Odyseuss, is pushing 8 lbs. They are brothers. They love to play with eachother. They sleep next to eachother, and won't leave eachothers side. Odyseuss is the bad one. He always starts the play fights. Sarge is a big teddy bear we won't bite or nip Odyseuss even when he is bitting Sarge's lips and making him whine. Sarge does like to take his brother's toys and destroy them though. They are fun to watch. Odyseuss will curl up next to Sarge's belly and sleep on Sarge's dogbed, eventhough he has a catbed.