It carries its babies in a pocket on the front of its body.这

谁说的on the front 后面不能加of?当然能加啦!
on the front of 在.的前部/前面,指在身体的前部用on
如果表示“在.范围的前部/前面”,则用in .如:
He is sitting in the front of the classroom .他坐在教室的前面.
句意:它用身体前部的袋子携带幼仔.(这句话可能是描写袋鼠的.）