Solve these clues to fill the grid.
- Hard structures in the mouth used for biting and chewing.
- 2 Across
- A natural protective body covering and site of the sense of touch
- 4 Across
- Large furry animal that hibernates in winter
- 5 Across
- An insulating layer of fat under the skin of whales and other large marine mammals
- 6 Across
- Sharp curved horny process on the toe of a bird or some mammals or reptiles (plural)
- 8 Across
- The responsive adjustment of a sense organ to varying conditions (plural)
- 11 Across
- Located at or near or coming from the earth's poles
- 12 Across
- The first or preliminary coat of paint or size applied to a surface
- 1 Down
- Any of the short curved hairs that grow from the edges of the eyelids (plural)
- 3 Down
- The opening through which food is taken in and vocalizations emerge
- 7 Down
- Cud-chewing mammal used as a draft or saddle animal in desert regions
- 9 Down
- Clear liquid we drink that falls as rain
- 10 Down