What do you do with your dead cat or dog's body?

I’ve been around pets all my life, so I’ve seen several go. As a kid, I remember burying our family pets in the back yard, or back behind the (rural) family business. I’ve had my current dog the whole time I’ve been an adult, roughly 10 years or so. As a city apartment deweller now, I don’t really have those burial options. So when it’s bigger than a goldfish and smaller than a horse, what do you with your pet when it dies?