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The rough-skinned newt Taricha granulosa of the Pacific Northwest produces more than enough tetrodotoxin to kill an adult human, and some Native Americans of the Pacific Northwest used the toxin to poison their enemies. [15] However, the toxins are only dangerous if ingested or otherwise enter the body; for example, through a wound.
Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. All ten extant salamander families are grouped together under the order Urodela from the group Caudata. [2]
Both males and females grow to an adult length of 24 to 40 cm (9.4 to 15.7 in) from snout to vent, with a total length of 30 to 74 cm (12 to 29 in), making them the fourth-largest aquatic salamander species in the world (after the South China giant salamander, the Chinese giant salamander and the Japanese giant salamander, respectively) and the ...
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Male marbled salamanders have also been shown to have a higher survivorship than females. [9] Marbled Salamanders in the northern portions of their range can also go into a state of torpor to survive the cold months. [10] Adults spend most of their time in their burrows or under logs, as is the case with most mole salamanders.
After metamorphosis, adult tiger salamanders will migrate to a new territory. Females have been documented to migrate further than males, and larger individuals will migrate further than smaller ones. [15] Tiger salamanders are almost entirely terrestrial as adults, and usually only return to the water to breed.
The Arboreal Salamander exhibits a unique reproductive strategy in which the females lay their eggs in moist burrows, which the hatchlings then enter. The adult salamanders stay near their eggs to shield them from predators and environmental hazards, demonstrating parental care and increasing the hatchlings' chances of survival.
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]