Across
- 3. large african antelope also known as the gnu
- 4. any of numerous extinct elephants
- 7. venomous snake
- 8. biggest bird in the grouse family
- 11. a term used to describe animals that develop the embryo inside of the body, leading to live birth.
Down
- 1. a state of dormancy in animals, usually taking place in the summer.
- 2. elongated fish found in fresh water.
- 5. large antelope with spiralled horns
- 6. group of organisms considered to be biologically immortal
- 9. nocturnal mammal insectivore.
- 10. second largest flightless bird
- 12. one of the five extant species of monotremes