Minecraft wiki entry for Development_versions, associated text: Can croak, jump, swim, and walk on land
Come in three variants: default, tropical, and snowy.
The default variant is orange, the tropical variant is white, and the snowy variant is green.
Can be tempted and bred using seagrass.
Lay eggs on water after mating.
Grow from tadpoles.
Variants depend on the temperature of the biome it turns from a tadpole to a frog in.
Eat small slimes