There are two things that go through my mind when I watch My Gym Partner's a Monkey: 1) It is a cartoon 2) Comedy. I suspect if I were living in some bizzaro cartoon universe, anything is possible i.e. my jaw dropping to the ground, and my tongue dragging on the floor.
Back to the cartoon itself. As Jake's last name is Lion; subsequently he is shifted from a human school to an animal school. Basically Charles Darwin School is used to educate young animals. Again, this scenario could be possible in a cartoon universe. Jake Spider-Monkey and Adam Lion are best friends, and they get up to all sorts of stuff. One of my favorite episodes is, when the animals from Charles Darwin School, stayed at Adam's house for the night.
For a cartoon that has been produced on the cheap, I like it, because it is funny. If you want realism, well go and watch Nat Geo, or Discovery. It is a cartoon, Jake Spider-Monkey and Adam Lion can do anything they want, ranging from a talking Spider-Monkey, to being transferred to an animal school.
Nevertheless, my Gym Partner's a Monkey, could be a metaphor for school. Looking back at my youth, there is one place that could come close to a zoo, and that is high school, as the kids are out of control, and all the students are tearing each other to bits.
I have to give the my Gym Partner's a Monkey 8/10. That theme song is going to haunt me, until the day I die.