Teeth, Fangs, GULP

Noun sudden numbing fear
The appearance of a Brazilian fish has sent a chill through summertime swimmers in Sweden and Denmark. The alarming fish is the pacu, a cousin of the piranha, which has large teeth and a reputation for biting men's testicles.
Noun hard bonelike structures in the jaws of a venomous snake used to inject its poison
The Gaboon viper is found in the rainforests and savannas of sub-Saharan Africa. The world's heaviest viper snake, it lies in waiting, ready to sink all 2.2 inches (5.6 cm) of its fangs into its prey.
Verb take food, especially of an animal or baby
Highly voracious predators, they emerge from their burrows at night to feed on worms, insects, frogs, and even other salamanders.
Adjective characterized by high-spirited, sometimes aggressive, behavior
These feisty dogs often bond to only one or two persons in a household. They can also be snobbish when it comes to other kinds of dogs, as the Chihuahua is a clannish breed.
Adjective not attractive or good-looking
The same molecules that endow naked mole rats with springy, wrinkled skin also seem to prevent the homely rodents from contracting cancer.
Adjective prevented from moving or operating as normal
Bird eaters are one of the few tarantula species which lack tibial spurs that keep the fangs of the female immobilized during mating. She may eat him!
Verb force or drive a fluid into something
While a fearsome reputation precedes them, in reality the tarantula's bite is only as harmful as it looks. What venom they may inject is weaker than that of the average bee.
Adjective having very large teeth
The megalodon is an extinct megatoothed shark that existed in prehistoric times and may have been the largest and most powerful macro-predatory fish in vertebrate history.
Noun animal hunted or caught for food
The Gaboon viper is found in the rainforests and savannas of sub-Saharan Africa. The world's heaviest viper snake, it lies in waiting, ready to sink all 2.2 inches (5.6 cm) of its fangs into its prey.
Verb produce again
Over their long lives, an alligator may regenerate something on the order of 4,000 teeth. So a team of researchers from the U.S., China and Taiwan performed a detailed investigation of alligator teeth to learn their secret.
Verb use force to cause something to go into something
The Gaboon viper is found in the rainforests and savannas of sub-Saharan Africa. The world's heaviest viper snake, it lies in waiting, ready to sink all 2.2 inches (5.6 cm) of its fangs into its prey.
Verb cause or allow food or drink to pass down the throat
Anacondas squeeze until the animal dies of asphyxiation. Stretchy ligaments in their jaw allow them to swallow their prey whole.