not always the case, but in certain species it is a way to impress females, and to warn other males that they are in their "territory"
Because only the males calls.
because only males emit mating calls.
No, male frogs can only mate with females.
Males croak all the time, Females only croak if they are about to be killed. A male frog will croak but a female frog will not.
Almost any male frog is able to create sounds with a vocal sac, and the females are sensitive only to the sound of their own species. Sometimes different species will hybridise, but these hybrids have a smaller chance of survival.
Only if the male is at least half the size of the female, as the female will recognise it as food.
It is the testes!testes
The only time a frog lives with another frog in the wild in during courtship and mating.
No, male cats do not meow when they are in heat. Only female cats exhibit vocal behavior when they are in heat.
The urogenital system of the male frog is not much different than that of the female. In fact, the only difference is that the male will possess a pair of testicles, while the female will possess a pair of ovaries.
They are in a pre- stage of mating wich means that the male is holding on to the female. They are not having sex - the male clamps the female so no other males can fertilise her eggs when the female deposits them. Only during this moment - the so-called spawning, the males will deposit their sperm.
ONLY if the tree frog came from the same place !