This is because the shoulder has a shallower joint socket, so it can become dislocated easier.
"An example of mutualism in the rainforest is the pollination of the Durian tree by bats."
Answer:
A hammerhead shark that gave birth in a Nebraska aquarium reproduced without mating, a genetic analysis shows. This form of asexual reproduction, called parthenogenesis, has been found in other vertebrate species, including some snakes and lizards. But this is the first time it has been documented in a shark.
