Birth is the fourth episode of season one.
- Next Episode: Cheats
- Previous Episode: Speed
Rank[]
- Number 10. Tasmanian Devil - It gives birth to 30 joeys no bigger than a grain of rice.
- Number 9. Seahorse - The female passes the eggs to the male, so he can nurture and incubate them.
- Number 8. Kiwi - It produces one of the largest eggs in the world.
- Number 7. Rabbit - It gives birth to several babies that will have their first brood 6 months after.
- Number 6. Whale - It does everything on a big scale when it comes to breeding.
- Number 5. Surinam Toad - Birth is back-breaking work having to take care of 100 babies on your back.
- Number 4. Armadillo - It can postpone pregnancy and always gives birth to identical quadruplets.
- Number 3. Aphid - It can give birth to up to 41 children in her lifetime.
- Number 2. Termite - The queen could give birth every 15 seconds and have up to 30,000 babies a day.
- Number 1. Tapeworm - It has more sexual organs than any other animal.