Question: I received a grizzly bear tooth amongst some of my grandfather's possessions after he passed away. My grandfather grew up here in California and was an amateur geologist (never hunted), so I think he either found or purchased the tooth, although I have no proof. I was wondering if it is legal to possess or sell the tooth here in the state of California. I don't want to break any laws.

Answer: It is legal for you to possess it but you cannot try to sell it. According to Department of Fish and Game (DFG) Statewide Coordinator for Bear, Mountain Lion and Wild Pig Programs, Marc Kenyon, the sale or purchase of any bear part in California is prohibited (FGC, Section 4758 (a)). Even offering it for sale over the Internet is a federal violation that could make you subject to prosecution under the Lacey Act.

Looks like you may possess the tooth, or give it away but you may not sell it. Sounds to me like you may have an interesting piece of California's history, as grizzly bears are extinct in the state -- enjoy it.