Facts about Newts
- 10
Newt skin contains mucus glands that secrete a protective coating, which they shed and consume roughly every 2 to 3 weeks to retain essential nutrients and minerals.
- 09
Alpine newts can absorb oxygen through their skin during winter hibernation underwater, remaining dormant for up to 6 months without surfacing for air.
- 08
Male newts perform elaborate underwater courtship dances lasting several minutes, fanning pheromones toward females with their tails to stimulate breeding behavior.
- 07
Newts undergo a dramatic transformation called neoteny, where some species like the axolotl retain their aquatic larval features throughout their entire lives and never develop into fully terrestrial adults.
- 06
A newt's eye lens can be regenerated from the dorsal iris tissue, allowing species like the axolotl to regrow a fully functional lens within 18 days after removal.
- 05
Newts can live up to 15 years in the wild and over 20 years in captivity, making them among the longest-lived salamanders.
- 04
The palmate newt's males develop distinctive webbed feet and a jagged crest along their spine during the breeding season from November to April.
- 03
During their aquatic larval stage, newts can breathe through external gills and absorb oxygen directly through their skin, eliminating the need for lungs until they metamorphose into terrestrial adults.
- 02
Rough-skinned newts of Oregon produce tetrodotoxin, the same deadly neurotoxin found in pufferfish, making them roughly 1,000 times more poisonous than cyanide per gram.
- 01
Some species of newts can regenerate their eyes, heart, and spinal cord completely within 60 days of injury.