Generally speaking, in an emergency dial 911 and an operator will assess your situation and dispatch the appropriate response team. Operators will usually only speak English.
Los Angeles Police Department
Dial 911 and report your emergency to the operator. The operator will call back if the connection is lost. If you don’t pick up the call, the police department will treat your call as an emergency and police will be dispatched to the address attached to telephone number used.
Beverly Hills Fire Department
Dial 911 and ask for the Fire Department. The LAFD are too busy to rescue cats in trees so don’t even bother asking.
County of Los Angeles Paramedics (Emergency Medical Services)
Beverly Hills Paramedics (Emergency Medical Services)
Call 911 and state the emergency. The operator will dispatch the information to the relevant EMS: Lifeguard, Hazardous Materials, and Forestry.