Hey OP, if you're in Lakewood CA here are some Vets open 24/7
Cerritos Veterinarians | VCA Lakewood Animal Hospital | Home
Crossroads Animal Emergency & Referral Center
11057 E. Rosecrans Ave.
Norwalk, CA 90650
(562) 863-2522
(800) 345-9088
There are more if you google map Lakewood CA, then use the "Search Nearby" option and type in Emergency vets.