Shrew

Shrews are creatures of the kingdom Carpozoa descended from the Shrew Lizard. Shrews in general bear several similarities to mammals on Earth. They produce milk for their young just like mammals, and most species have a marsupium in which they raise their young. Most shrews, like the majority of Carpozoa have six eyes, and all the shrews have at least a rudimentary sense of hearing inherited from the Shrew Lizard. A major line of shrews developed fur.

Breathing and Blood
Shrews have an iron based blood which makes it red.

Extinction
Most of the shrews, even the Shrew Lizard were wiped out by a deadly plague. This plague was spread by one of their parasitic relatives, the Death Soriparasite. Only a few of the shrews survived, as well as the blood-sucking forms.