muricide

noun2

1. •
   Mouse-killing (especially in rats).

   • The experimental models used included isolation and shock-induced conspecific aggression, muricide (mouse-killing), and ranicide (frog-killing). — 1974
2. •
   Someone or something that kills mice, rats, or voles.

   • Muricide, (lat[in]) a mouse-killer, a cowardly fellow. — 1658