Who killed Nyxo?
There are no suspects in the February death of ecologist Mourad Gabriel's Labrador mix, according to law enforcement.
But since the 10-year-old dog died after eating meat laced with a rat poison Gabriel had been researching, there is suspicion among some that it was marijuana growers, according to the San Francisco Chronicle.
A petition with 55,000 signatures was delivered to the state Attorney General's office by the Center for Biological Diversity, which called for a deeper investigation.
IIlegal pot farms often used toxic chemicals, according to the newspaper, such as the ones Gabriel is researching. Gabriel requires a law enforcement escort when visiting pot farms, the newspaper reported.
No other dogs have been similarly poisoned in the Blue Lake area, where Gabriel's home is located.
