yes they can as long as they knew each other from birth or when they little
Rats very much enjoy the company of other rats. Putting males and females together however will quickly result in over population. To introduce two rats take them to a neutral area away from their cages. Say a table or a bed or the floor. Let them sniff and touch for awhile and then after a bit put them away into the same cage. Rats do tend to play fight and wrestle alot..there can be squealing, as long as they are not injuring each other it is all normal.
rats fight like any other animals fight, normally over territory, and also, rats are very dominant. They groom each other alot too, dont mistake it for fighting.
Rats eat Robins, so no, they don't.
Yes baby rats can hump each other. There is nothing to worry about though. This is just called "bulling".
No, rats are predatory towards other small rodents. It would kill a gerbil.
I don't think that rats eat each other.
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-
Rats engage in a lot of physical activity together, running, jumping on each other, and standing on hind legs to box at each other. These are all types of play-fighting. Real fighting is more serious, and usually involves attacks on the rump. You can find more information here: http://www.ratbehavior.org/norway_rat_ethogram.htm#PlayFighting.
Chinchillas are rodents so they are related to guinea pigs, mice, rats, etc but their closest relative and only other member of the Chinchillidae family is the Viscacha, a rabbit-like animals.
Rats don't eat their injured. Rats in order to survive, live in packs. Like wolves and dogs, rats take care of the weak before themselves. My sweet rats would bring each other food and groom each other when the other one was sick.However, if a wild rat dies, others may eat the body to stop it from attracting predators. Extremely rarely, this instinct kicks in with domestic rats too and one may eat their dead cage mate.
yes there are , there are degus , jerbowas , chinchillas , hamsters , mice , rats , basically all the rodents that live on this planet.
Make sure that your rats are not just play-fighting. Many rats do this. They may scuffle and squeak from time to time, this is perfectly normal. They are establishing a pecking order.Only if you find bites or blood on either of the rats should you separate them.Also, ensure that you are introducing your rats properly to each other. If you just chuck one into the other's cage, of course they will feel that their space has been invaded and they may fight. However if you slowly introduce them beginning on neutral territory such as a bathtub, you will have much greater success.