[So this one went through some workshopping. The above creature is called the “verminator” in the Hacklopedias, but I don’t like that name, in part because vermin is usually used in D&D 3.x to refer to giant insects, and in part because it’s clearly a vermin-gator. There’s also a nearly-identical monster less than fifteen pages away, the acid weasel. So I added the acid weasel’s spit attack to the verminator’s picture, and then changed the name.]
Nutriagator This
creature looks something like a reptilian rodent, with a scaly hide and webbed
digits.
One of the many magical
hybrids found the world over, nutriagators combine the rapid reproduction of a
nutria with the scaled hide of an alligator. Originally bred with an eye for
the leather trade, they escaped captivity due to an emergent property found in
neither parent species—nutriagators have acidic saliva, which they can spray in
a line and use to chew through iron bars.
Most nutriagators live in
swamps and other wetlands, but due to their acid-proof hides, they can survive
in toxic seeps, mine drainages or other incredibly hazardous environments.
Nutriagators are omnivores with a taste for meat. They usually target mostly
prey of their own size or smaller, but will cooperate with each other in order
to tackle man-sized creatures. They have few natural predators, but some
unnatural ones. Black dragons find them delicious, and many will go out of
their way to hunt nutriagators.
Shores of Swords 