chumtoad

Chumtoads are small, amphibious creatures found on Xen. Similar in morphology to Earth's toads, they are very low on the Xen food chain – serving as the favorite prey of many Xen creatures. The name is a compound of "chum" (i.e. shark bait) and "toad", in reference to these traits. Chumtoads are notable for their bright purple skin, their single red, catlike eye, their spiked backs, and their long, blue tongues.

chumtoad on hl wiki[half-life.fandom.com]