No they can not, but that's a good question.
Gerbils tails can fall off if someting tugs against it. i would get it to a vet straight away and just on the way keep it mopped up with some tissue prehaps, dont worry im sure it will be fine ;)
Yes they do because if an animal gets hold of it in the wild then it disable its tail from its body to get away,but dont worry it does grow back! lol
Tadpole's tails do not fall off by themselves, but they can be bitten off. I do not know if their tails grow back. I am trying to figure that out right now because 4 of my tadpole's tails got bitten off.
If you pull there tail so hard and hold your hand on the little buttocks it may come off and may bleed and will dry later on don't do this to your gerbils don't hold them upside down with their tails it's really fragile and may cause to break and bleed.
Yes, leopard geckos' tails can fall off easily as a defense mechanism called autotomy.
NO NO NO NO NO NO IT NEVER CAN AND NEVER WILL
No
No, people can't
No, a donkey's tail does not fall off. This is in reference to the animal. However, donkey tail plants do tend to fall off.
Yes.
No, they don't, but it's possible for them to get pulled off.
some types, it is used as defense or protection