In Land Before Time V, when Chomper's parents first show up on screen, we clearly see that it is his mother that appears first. But in the next shot, she is switched out for Chomper's father, and reappears again, in the backward, walking towards Chomper and her mate. After Chomper asks if he can bring friends and his father said they could use some dessert, in the next shot, Chomper's mother and father are once again switched around.