Cyril Ruoso / Black-tailed jackrabbit (Lepus californicus) looking alert South Texas USA

Cyril Ruoso / Black-tailed jackrabbit (Lepus californicus) South Texas, USA, April.

Cyril Ruoso / Black-tailed jackrabbit (Lepus californicus) South Texas, USA.

Cyril Ruoso / Black-tailed jackrabbit (Lepus californicus) standing, with ticks visible on ears, South Texas, USA.

Cyril Ruoso / Black tailed jackrabbit (Lepus californicus) sitting, Vizcaino Desert, Baja California, Mexico, May.

Steve Gettle / Black-tailed Jackrabbit (Lepus californicus), North America

Steve Gettle / Black-tailed Jackrabbit (Lepus californicus), North America

Cyril Ruoso / Black-tailed Jackrabbit (Lepus californicus), southern Texas

Cyril Ruoso / Black-tailed Jackrabbit (Lepus californicus), El Vizcaino Biosphere Reserve, Mexico

Rolf Nussbaumer / Black-tailed Jackrabbit (Lepus californicus) adult in grass. Laredo, Webb County, Texas, USA, April.

Suzi Eszterhas / Close up of Black-tailed Jackrabbit (Lepus californium) juvenile, hunkered down, camouflaged against rock, Red Corral Ranch, Texas, USA

Suzi Eszterhas / Black-tailed Jackrabbit (Lepus californium) juvenile, hunkered down, camouflaged against rock, Red Corral Ranch, Texas, USA