The last time anyone saw the San Quintin kangaroo rat was more than 30 years ago, in the arid scrublands of Baja California in Mexico. Mexican authorities declared the small mammal critically endangered, and possibly extinct, in 1994. So biologists couldn't believe their eyes when not one, but four San Quintin kangaroo rats (Dipodomys gravipes) hopped into their survey traps in 2017. Named for their ability to leap like kangaroos, the rats are key species in arid areas across western North America, dispersing seeds and feeding predators such as coyotes and foxes. The San Quintin kangaroo rat is about 12...
