Man, water rats, mink, weasels, and skunks are the most dangerous predators. Frogs only defense is their power to change colors to adapt to their surroundings. The breeding period of frogs is in the early spring. Frogs start to breed when they are fully grown at two to three years old. Eggs are laid in water, usually by shorelines or shallow water.
Breeding depends a great deal on the temperature.
Warm weather and sunlight slow the process. Frogs prefer cooler waters. Males arrive at the breeding pond first and begin a chorus of croaking. Usually only male frogs croak. They do this during the breeding season to attract female frogs and to warn away other male frogs.