kangaroo rat
When I was at the Organ Mountain[s] national monument I had the sliding door open after dark. The interior light was throwing a bit of illumination on the ground.
One of these guys went scampering by. Looked like a gerbil with a longer tail curved up and ending in a black tuft. If they hop like a ‘roo this one was slacking. He walked like a normal mouse.
[caption id=”” align=”alignnone” width=”750”] By Bcexp [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)], from Wikimedia Commons[/caption]