Gerbils are naturally clean creatures. If a gerbil smells it cage probably needs cleaning. If not it may be ill. If this is so consult a vet.
yes gerbil should aways have wheels with them
Depends about the dog and gerbil. You should bring your gerbil to a vet (if they do gerbils).
It is possible. a hamster should not be kept with a gerbil. The hamster may also try kill the gerbil if it dislikes it.
no questions asked take your gerbil to the vets straight away
WHY is there wax on your gerbil? If hot wax fell on your gerbil its probably burned. You should take it to a vet.
No
Average adult gerbil weighs about 2.5 oz
you don't need to if you have another gerbil because they clean each other :)
Yes, it is possible and likely that the cat would try to catch, kill and maybe eat the gerbil. You should keep the gerbil in a cage that isn't accessible by the cat.
YES! it would be creepy not to; just having a dead gerbil sitting there. YUK!
If your gerbil is tilting, you should go to the vet quickly. This means that your gerbil has got an injury in its ear . Watch out! Get some medical treatment for your gerbil IMMEDIATELY.
Then you should get another gerbil so it wont be lonely