i dont think so, they'd propably get eaten!It is possible , but certainly not common .
hinge joints
The stomach is more of the size of a fist, but can expand to the size of a hand too.
I am actually diagnosed with something the doctor compared to having a monkey hand i punched a window damaged nerves, tendons, artery's and veins, the hand was saved but now apparently it's the same...
Human hands vary in size so the range would be about 250-500g for an adult.