Armadillo!

Kickball anyone? 

The Nine-banded Armadillo serves science through its unusual reproductive system, in which four genetically identical quadruplets are born in each litter.Because they are always genetically identical, the group of four young provides a good subject for scientific, behavioral or medical tests that need consistent biological and genetic makeup in the test subjects.

Armadillos make common roadkill due to their habit of jumping to about fender height when startled (such as by an oncoming car). WIKIPEDIA