Frogs in the context of "Parotoid gland"

Jumping or leaping is a form of locomotion or movement in which an organism or non-living (e.g., robotic) mechanical system propels itself through the air along a ballistic trajectory. Jumping can be distinguished from running, galloping and other gaits where the entire body is temporarily airborne by the relatively long duration of the aerial phase and high angle of initial launch.

Some animals, such as the kangaroo, employ jumping (commonly called hopping in this instance) as their primary form of an locomotion, while others, such as frogs, use it only as a means to escape predators. Jumping is also a key feature of various activities and sports, including the long jump, high jump and show jumping.

Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, to spawn refers to the process of freely releasing eggs and sperm into a body of water (fresh or marine); the physical act is known as spawning. The vast majority of aquatic and amphibious animals reproduce through spawning. These include the following groups:

• Bony fishes
• Crustaceans (such as crabs, shrimps, etc.)
• Mollusks (such as oysters, octopus, squid)
• Echinoderms (such as sea urchins, sea stars, sea cucumbers, etc.)
• Amphibians (such as frogs, toads, salamanders, newts)
• Aquatic insects (such as dragonflies, mayflies, mosquitoes)
• Coral, which are living colonies of tiny, aquatic organisms—not plants, as they are sometimes perceived to be. Corals, while appearing sedentary or botanical by nature, actually spawn by releasing clouds of sperm and egg cells into the water column, where the two mix.

As a general rule, aquatic or semiaquatic reptiles, birds, and mammals do not reproduce through spawning, but rather through copulation like their terrestrial counterparts. This is also true of cartilaginous fishes (such as sharks, rays and skates).

The resplendent quetzal (Pharomachrus mocinno) is a small bird found in Central America and southern Mexico that lives in tropical forests, particularly montane cloud forests. They are part of the family Trogonidae and have two recognized subspecies, P. m. mocinno and P. m. costaricensis. Like other quetzals, the resplendent is mostly omnivorous; its diet mainly consists of fruits of plants in the laurel family, Lauraceae, but it occasionally also preys on insects, lizards, frogs and snails.

The species is well known for its colorful and complex plumage that differs substantially between sexes. Males have iridescent green plumes, a red lower breast and belly, black innerwings and a white undertail, whilst females are duller and have a shorter tail. Grey lower breasts, bellies, and bills, along with bronze-green heads are characteristic of females. These birds hollow holes in decaying trees or use ones already made by woodpeckers as a nest site. They are known to take turns while incubating, males throughout the day and females at night. The female usually lays one to three eggs, which hatch in 17 to 19 days. The quetzal is an altitudinal migrant, migrating from the slopes to the canopy of the forest. This occurs during the breeding season, which varies depending on the location, but usually commences in March and extends as far as August.

Gigging is the practice of hunting fish or small game with a gig or similar multi-pronged spear. Commonly harvested wildlife include freshwater suckers, saltwater flounder, and small game, such as frogs. A gig can refer to any long pole which has been tipped with a multi-pronged spear. The gig pole ranges in length from 8 to 14 ft (2.4 to 4.3 m) for fish gigs and 5 to 8 ft (1.5 to 2.4 m) for frog gigs. A gig typically has three or four barbed tines similar to a trident; however gigs can be made with any number of tines. In the past people would attach illuminated pine knots to the end of gigs at night to give them light.

The opalines are a small group of peculiar heterokonts, currently assigned to the family Opalinidae, in the order Slopalinida. Their name is derived from the opalescent appearance of these microscopic organisms when illuminated with full sunlight. Most opalines live in the large intestine and cloaca of anurans (frogs and toads), though they are sometimes found in fish, reptiles, molluscs and insects; whether they are parasitic is not certain. The unusual features of the opalines, first observed by Antonie van Leeuwenhoek in 1683, has led to much debate regarding their phylogenetic position among the protists.

Xenopus (/ˈzɛnəpəs/) (from Greek ξενος, xenos 'strange' + πους, pous 'foot', commonly known as the clawed frog) is a genus of highly aquatic frogs native to sub-Saharan Africa. Twenty species are currently described within it. The two best-known species of this genus are Xenopus laevis and Xenopus tropicalis, which are commonly studied as model organisms for developmental biology, cell biology, toxicology, neuroscience and for modelling human disease and birth defects.

The genus is also known for its polyploidy, with some species having up to 12 sets of chromosomes.