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 |