The majority of reported traffic incidents involving an animals in California were with Mule deer.

Wildlife type Number % of Total :
Mule deer – 6,119 – 89%
Coyote – 377 – 9%
Black bear -135 – 2%
Elk – 44 – <1%
Mountain lion – 43 – <1%
Wild pig – 21 – <1%

Follow this link to the report:
http://www.wildlifecrossing.net/california/files/xing/CROS-CHIPs_Hotspots_2017_Report_fin.pdf