Quote Originally Posted by John View Post
Ouch, don't tell my frogs you think they're reptiles...

To answer the original poster, frogs aren't social animals, except under very specific conditions (breeding for example). So no, they don't get lonely.
Wasn't there this one user who said their frog really liked to cling to their hand and that it would croak with joy every time they picked it up?

I thought there was... I doubt frogs long for companions of the same species however because they like to eat each other. If you were alone in a room with one other person and you were lonely you would certainly not eat him/her.