Answer:
only toads have poison glands behind their eyes while frogs have poison gland in their skin.
Step-by-step explanation:
All frogs have poison glands in their skin. In most cases, these toxins aren't strong enough to discourage predators. But certain frogs in Central and South America have especially strong poisons in their skin. These frogs are called poison dart frogs, because native people used the poison from their skins on the tips of hunting arrows and blow darts.
Toads make use of poison, too. Behind their eyes they have a pair of poison glands, called parotid glands. When the toad is threatened, a milky poisonous fluid oozes from the glands. The poison is stronger in some toads than others.