Violently.
With their bodies.
Each other!
yes, yes they can
yes usually. see "bird's and bee's"
they hump each other
Yes baby rats can hump each other. There is nothing to worry about though. This is just called "bulling".
hump each other
no the hump each other
Yes they do because that's how they molt.
Scissoring?
In order to get babies they should.
1 like climbs on the other, half on half on the ground. and it humps.
Dogs are supposed to be gay so they can hump each other