A newt is a salamander but a salamander is not necessarily a newt, just like a toad is a frog but all frogs are not toads. Specifically, a newt is a salamander that's a member of the family Salamandridae and one that's more aquatic than other salamandrids.
It's said that unlike many other kinds of salamanders, newts don't have costal grooves, those vertical groves on the sides of the body. I can't think of any exceptions. It's also said that newts have rougher skin than other salamanders, but some highly aquatic newts like Cynops wolterstorffi actually have smooth skin...
What about the deposition of the eggs? With most species I can think of, the salamanders lay thier eggs in masses where as the newts lay thier eggs individually. ( as with the frogs..masses and the toads..singly or in chains )
That's kind of true, but then there are the salamanders who gestate, also some newts will occasionally lay eggs in strings, and axolotls which are generally considered salamanders lay their eggs individually.
Among the distinguishing characteristics, these experts note that:
* all newts have aquatic larvae
* all newts utilize ponds or streams to reproduce
* newts are highly poisonous in all stages of their life history
* newts have rough-textured skin that is not slimy
* with newts, costal grooves usually are not distinct
But as they point out, the subdivision of Salamandridae into "true salamanders" and "newts" is an informal one.
This description makes me wonder though, which non-newt salamandrids are not poisonous in all stages of their life history, and which newts have distinct costal grooves?
biologically there is no difference between a newt or a salamander (if not comparing the genders or species). The only difference is made in the language and that is not consequent too. The people call Urodela that mainly live in water or spend a longer time in water Newts and the ones living mostly terrestrial they call Salamander. But what are then the Andrias giant salamanders? In the german language there are even newts and salamanders within Ambystoma and other genders. So there is no real difference
I think newt and salamander is more like turtoise and turtle. I don't think I would compare them to toad and frog. I think toad and frog is pretty arbitrary. A surinam toad is very closely related to an African clawed frog. Why in the world is the one a toad and the other a frog? The words toad and frog are often interchangeable.
I guess the only thing I'm certain of (maybe) is all newts are salamanders but not all salamanders are newts. A salamander that starts in water goes to land and then goes back to water I would call a newt. Some newts can spend most of their life in water e.g. Cynops cyanurus. I wouldn't call that newt like behavior. I guess that doesn't clear anything up.
Perhaps a better example of an entirely or mostly aquatic newt would be something like Pachytriton brevipes or P. labiatus. I was surprised to find that Cynops cyanurus yunnanensis overwinter on land in the wild (or at least some juveniles do). Perhaps they're not as aquatic as keeping them in captivity would lead one to believe. Same goes for C. ensicauda, which spend much of their lives on land in the wild though they can be kept almost entirely aquatic in captivity.
I probably know less about anurans than most people here, but aren't "toads" more bulky, warty and generally found on land rather than in the trees or in the water (outside the breeding season, at least)? That seems to me distinctive enough to separate them in the mind, even though there's a grey zone in which there are some toad-like "frogs" as well as froggy toads. It all comes down to common perception and language use. When I see Bufo, I think "toad" not "frog"
I'm now starting to wonder whether Pachytriton have those distinct costal groves or not....
@sde, hi everybody I'm getting a tiger salamander coming from Katy Texas what are the shipping conditions that's okay to have them shipped to me in the state of Vermont it's just starting to get the temperature low above 45 but it may be too hot to ship him any thoughts or ideas on how to work this out
I currently have a 3 year old axolotl, he hasn't been eating for the past couple of weeks and has lost a lot of weight. Hedwig usually eats bloodworms and earthworms just fine but now he won't even stud it. I've done a water change to make his nitrate lower and his water is at a good temperature
Hey guys I was wondering if my axolotl looks fine to you he/she (still don’t know) I’d activate and eating as usual but I did notice veins in the tail area.. let me know what you guys think! Also if anyone could tell if it’s a boy or girl that would be great! (Zolo was eating a worm and pretty sure the worm pooped XD)