What to do with a dog that has passed away in northwest houston?

My parents are in Cypress and our childhood dog just passed away in the night. My dad is having a hard time finding any options for what to do with him other than just trying to bury him in the frozen backyard. Does anyone know any emergency vets or something like that that may be open and could cremate him or something? They're just at a loss for what to do and I'm trying to help out.

Update: I was able to find a place only a few miles from their house and they just dropped him off to be cremated! Thank you to everyone for the suggestions and well wishes it really meant a lot to have so many people trying to help