The African bullfrog (Pyxicephalus adspersus) is the biggest frog in Africa and very aggressive. He has a nasty bite as any predator that tries to go after him learns. But in spite of that, he’s a devoted father.
Bullfrogs spawn in little pools around the margins of larger ponds and after mating is over, one male stays to keep watch over the newly hatched tadpoles.
In this clip from PBS’s Nature series, the tadpoles this bullfrog dad is protecting are going to die within an hour unless he does something to save them.