Kittens are intolerant to heat but not cold. When they feel cold, they will have the following symptoms: 1. They will curl up their bodies, hide their claws under their bodies, and bury their heads in their bodies; 2. When you feel cold for a long time, your body will tremble and you will be reluctant to move. When winter comes, breeders can prepare warm mats, winter clothes for cats, and reduce going out to help cats survive the cold winter.