Question

why do some frogs,toads ,and salamanders have bright colours ?what does it signal?

Answer 1

they have bright colours to warn of predators

Answer 2

Some frogs, toads and salamanders have bright colors as a notification signal. This bright color is used to notify or warn possible predators of toxicity present in their skin. In some cases, a single drop of secretion from the skin of these animals is more than enough to result in the death of a person.