Red-eyed tree frogs lay eggs on leaves suspended above ponds. When the eggs hatch, the tadpoles fall into the pond, states the University of Wisconsin's BioWeb. Gray tree frogs lay eggs in swamps, ponds and puddles, says Nature Works, a project of New Hampshire Public Television.
During the rainy season, the male red-eyed tree frogs gather above ponds. They vocalize and jostle among themselves to establish territories. When a female appears, the males fight to see which one gets to mate. The winner clasps the female's back. She climbs down to the pond, fills an internal bladder with water and climbs back up into the trees. She selects a leaf hanging over the pond and lays eggs on it. The male fertilizes the eggs. The female then covers the eggs with water from her bladder, describes the BioWeb, a student research project of the University of Wisconsin LaCrosse. The eggs hatch 5 to 11 days later, releasing the tadpoles.
During late spring and summer, male gray tree frogs gather around ponds and swamps. They vocalize and aggressively defend their territories from other males. Females appear to select males based on their calls. The female lays eggs on the surface of any available shallow water. Swamps, ponds, swimming pools, puddles and even water-filled tires are likely locations. The male fertilizes the eggs. The eggs are usually tethered to vegetation to keep them from washing away, says Nature Works.Learn More
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If a female is fertile, a male elephant will hover around her for a period of a few hours to a few days, mating on and off over that time period. A female elephant has a 4 to 6 week period where she is able to conceive, but she is only fertile for 3 to 5 days of those weeks.Full Answer >