Across
- 3. The process by which creatures that are best adapted to their environment survive
- 4. A doctor who works with injured and ill animals
- 5. Illnesses transmitted between animals and people, like avian flu, mad cow disease, and Lyme
- 6. A journey across a stretch of land, usually made to observe or hunt wild animals
Down
- 1. Animals with hooves
- 2. The process through which animals get used to people or other things that aren't naturally a part of their surroundings
- 5. People who study animal behavior, habitats, anatomy, and everything else they can about animals