Berkelium is named after Berkeley California, much like it’s neighbor Californium which is named after the state. Thus both are depicted as animals one might find in California the Coyote and the Brown Bear.
Berkelium is a transuranic metal only used to synthesize heavier elements and can only be produced in nuclear experiments and explosions.
Californium is slightly more useful in being used to produce neutrons to start nuclear reactors and also the heaviest element currently discovered, element 118 oganesson. It’s a silvery transuranic mental that tarnishes in air.