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Instructions
Visit a pond or the amphibian house at a local zoo and ask to view some frog and toad eggs.
Observe the way the eggs are laid. Frog lay eggs in bunches that look like clusters of grapes. Toads eggs are laid in a long strips of tiny beads, which are held together with a jelly-like substance.
Look closely at the color of the tadpole eggs. The frog tadpole eggs will be speckled and lighter in color. The toad tadpole are smaller, about the size of a thumbnail, and black.
Ask the zoo curator where the eggs are in the tadpole development stage. When the eggs are first hatched both the frogs and toads emerge as tadpoles. Both look like small fish-like creatures. If the tadpoles are a month old, ask to see one close up to determine if it has teeth. This would mean it is a frog tadpole and not a toad tadpole, because toad tadpoles do not grow teeth. If the frog tadpole is six weeks old it develops a head and some hind legs, which are longer than a toad tadpole's. After nine weeks, the frog tadpole looks more like a frog with a long tail, and you can distinguish the difference between a frog and toad tadpole. The frog will start to look like a baby frog with smooth slimy skin.