The letters can be used to spell the 4 letter words main, mana, mini and pain. They also spell the 3 letter words aah, aim, bam, ban, bin, ham, him, hip, man, map, nap, pan and pin.
newt
Amphibian(type of animal) or mammalian
4. am-phi-bi-an
Salamander? It's a type of amphibian but I don't know if that's what you are looking for. If it isn't, sorry.
amphibian
Amphibian is stressed on the second syllable.
Newt is a four letter animal. It is a small amphibian.
Urocordylus is an extinct amphibian. It begins with the letter u.
Quasicaecilia is an extinct amphibian. It begins with the letter Q.
none there is no amphibian starting with n
Plains Leopard Frog is an amphibian. It begins with the letter p.
frog.