| Wolves, owls, bats, and crickets are ____ (active at night). |
dorsal |
| Most roundworms are free-living. Most flatworms are ____. |
endothermic |
| Most mammals and birds are ____ (warm-blooded). |
feral |
| Most birds and reptiles are ____ (egg-laying). |
nocturnal |
| The ____ (top) shell of a turtle is called the carapace. |
oviparous |
| Domesticated animals that have returned to the wild are ____. |
parasitic |
| The ____ (bottom) shell of a turtle is called the plastron. |
venomous |
| Cobras and vipers have fangs that inject ____ saliva. |
ventral |
