her legs are broken. you should take her to the vet
Because their body is not built the same as a hamster. Their bodies are stout and compact, where as the hamster is much more limber and agile. The curvature of the guinea pig's spine does not allow them to bend the same direction as the hamster wheel and they can become caught in it or thrown from it. If they are injured by a hamster wheel it can be fatal. Guinea pigs will not heal well from broken bones.
No the hermit crab's claws could get caught by the air slits in the ball. So putting your hamster in a hamster ball is a hazard.
It is highly unlikely a hamster would get his leg caught in any equipment designed for them. Also they would have to be stuck for awhile before resorting to chewing a leg off.
Take it to the veterinarian as soon as possible!
It got it's tail caught under a rocking chair rocker!
In someone's hair. I've heard of a hamster that got caught there.
The two most probable sources are your hamster and you. If you know the blood isn't yours, such as from a scratch, then it is probably from your hamster. You should carefully check the cage, toys and feed/water equipment over for sharp edges; looking for areas where hair is caught can help.
Your hamster could have got a bad sprain or a bad bruise. Feel around her leg and if you feel a broken bone, bring it to the vet. Only the vet can deal with tiny broken bones. If you don't feel anything broken, then the only answer could be a sprain or bruise. The most common reason is the wheel. If it is an open-barred wheel (it has holes in it) the hamster could have tripped on one of the holes and bruised the leg. Get a closed hamster wheel and make an appointment for the vet. Just to make sure.
Hamsters can sometimes squeak, this is because something has caught its attention or is scared of something.
"Was caught" typically implies a passive voice and is used when the subject did not actively participate in the action. "Got caught" is more informal and can suggest that the subject was actively involved in the action that led to being caught.
Orlick broke into Mr. Pumblechook's house, was caught, and subsequently placed in jail.
Shoring of a trench or excavation can cause a caught-between hazard.