What animal carries its eggs in its mouth?

The male of the frog called Darwin's frog (Rhinoderma darwinii) hatches the female's eggs in the vocal sac of its throat. He swallows them after guarding them from predators for about three weeks. The tadpoles are never aquatic swimmers as in other frogs, but live in the sac for three days - they feed off their egg yolks and secretions of the male frog. He regurgitates them just before their metamorphosis into frogs.