they don't get big. they are any where from 3 - 9 inches and as for a cage it needs to be an least 2 square feet or the rat will be unhappy
They eat worms rats 
Yes, but they can adjust to whenever you are awake too!:)
Probably because wild rats carry diseases and they steal human food. But domestic rats are nothing like wild rats. They are very intelligent and cute. Hope this helped!
Any pet that is non-domestic. The only non-domestic animal that people hates are flies & rats.
No, rats never carried plague. It was the fleas that they carried. Domesticated rats don't have fleas. Even wild rats are very clean and any fleas they do have don't carry plague much anymore.
Not very big about 3 inches tall
I don't think so
New york
In the book : Mrs.Frisby and the rats of NIMH, Dragon is the big fierce cat.
big ears
it has big ears
owls, snakes, hawks, bald eagles, some lizards, and other animals