We just learned a little about frog eggs, called Frogspawn.
When the eggs hatch, they turn into Tadpoles or pollywogs.
They are born with little flat tails, gills for breathing, and cartilage for bones.
As they get older, they will start to grow tiny lungs that they can use along with their gills to breathe.
Tadpoles mostly eat algae, but some bigger ones will eat insects or tiny fish.
They are in danger of being eaten by fish, large insects and birds, so some tadpoles are poisonous to protect themselves.
Eventually they will start to grow legs as they are on their way to becoming a frog.
This could be as fast as a week, or as long as a year!
(from: wikipedia - frog)
Kid Facts - Blast from the past: Snake Skull
