No. One of the reasons rats populate so quickly is that one male can father thousands of babies with multiple females. The offspring are able to mate too at only 6 weeks old. That being 2 rats can become thousands in a matter of months.
It depends if the rat accepts the mate
No. Panthers are animals that are alone except when they mate.
yes
Yes
Not life. A week or two, maybe.
Yes they do
Yes
No, dolphins do not keep their mate for life. Males and females do not stay together but a calf will stay with its mother.
yes all mice mate
You can help a rat have a longer life if you keep it healthy (water food exercise) and keep the rat in a clean cage (claening at least once a week)
get a life mate
they just mate