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Respiration differs among the different species of salamanders, and can involve gills, lungs, skin, and the membranes of mouth and throat. Larval salamanders breathe primarily by means of gills, which are usually external and feathery in appearance. Water is drawn in through the mouth and flows out through the gill slits.
They are very sensitive to desiccation and warm temperatures. More than 83 °F (28 °C) can be fatal, and they can only tolerate a water loss of 19.4 percent of initial body weight at most (compared to 29.0 to 32.9 percent for other species). Because of this, they are rarely found more than a meter away from free-running water.
These salamanders are mostly terrestrial and eat invertebrates, although some species are known to eat smaller salamanders. They can be found throughout the US and some areas of Canada in damp forests or plains. This family contains some of the largest terrestrial salamanders in the world, the tiger salamander and the coastal giant salamander ...
Red salamanders eat insects, earthworms, spiders, small crustaceans, snails, and smaller salamanders. To eat, they extend their tongue to capture prey on the tip of it and retract it back into their mouths. [3] The red salamander, as a member of the family Plethodontidae (lungless salamanders) lacks lungs and respires through its skin. [4]
Zophobas atratus is a species of darkling beetle, whose larvae are known by the common name superworm, kingworm, barley worm, morio worm or simply Zophobas.Superworms are common in the reptile pet industry as food, along with giant mealworms (Tenebrio molitor larvae treated with juvenile hormone [citation needed]).
Most Chinese giant salamanders stop feeding at water temperatures above 20 °C (68 °F) and feeding ceases almost entirely at 28 °C (82 °F). Temperatures of 35 °C (95 °F) are lethal to Chinese giant salamanders. [6] As a consequence, the species is vulnerable to global warming. [6]
Though not much is known about an adult salamander's eating habits, [25] it is known that they are likely to feed on earthworms, beetles, spiders, and even smaller kinds of salamanders. [26] Mud salamanders also can eat invertebrates as small as mites. [25] What the mud salamander tends to eat however, mainly lies in the habitat in which it lives.
Two-toed amphiumas are the most prominent in the Amphiumidae family and the longest salamander species in the United States, [4] that can grow from 39 to 1,042 g (1.4 to 36.8 oz) in mass and from 34.8 to 116 cm (13.7 to 45.7 in) in length.