As a child my family and I had 2 dogs. We had the mongrel pup after losing our cocker spaniel. We also had 2 goldfish. I always wanted to have pet mice but I had to be satisfied with helping the boy next door look after his, because my mother refused to let me keep them in the house.
As an adult I have had many guinea pigs. I cannot recall exactly how many, but they shared hutches and enclosures with my rabbits. I also had 2 budgies, a canary and a variety of small finches. All these were rescue pets from a local animal shelter. My cat came to me after being found apparently without a home, and the dog was too much for his previous owners to handle.
I guess I have had around 20 pets so far in total, but more if I count some of the animals I cared for in my home until they were rehoused.