If you are talking about pet rats, they are prone to many diseases. Pneumonia is the number one killer in rats. They can catch it from humans but we can't from them. Usually they get it from improper cage cleaning and/or ventilation (some think a glass tank is a good enclosure and it is the worse since there is no air flow). Also the type of bedding used is a cause of pneumonia as well. Aspen smells great, but that is the problem. The best bedding to use is recycled paper. The other killers are tumors(Cancerous and non cancerous), And cancer
Sometimes they live in groups,usully they live as a family. Sometimes they live in groups,usully they live as a family.
Yes, rats have the ability to recognize when other rats die. They are social animals that can display behaviors such as mourning and showing distress when a member of their group passes away.
No justin does not die.
No, rats do run to make them stronger and brave.
no
you can rap rats on each other but, they would probably die and a dump or/and kind of smart person would do it ;) -Thanks for you question-
he does not die in the end the rats oh nimh move their house just in time
krill
yes, they can die from over feeding
heart failure is not common in rats, as they usually die from tumors.
no
they will die if they little or no food to eat same with water