Animals with a Presence

Adjective having to legs or feet
The Allosaurus, one of the largest dinosaurs, was a large bipedal predator that paleontologists believe grew to over 12 meters (39 feet) long and 5 meters (16.5 feet) tall.
Verb hide by covering up or making harder to see
camouflage
To camouflage themselves, red-eyed tree frogs cover their blue sides with their back legs, tuck their bright orange feet under their belly, and keep their bulging red eyes shut.
Adjective easily seen or noticed
The hoopoe is a particularly conspicuous bird. Its boldly-barred plumage and beautiful crest, which it moves up and down, never fail to attract attention.
Noun something that discourages acting or proceeding
Skunks are legendary for their powerful deterrent --a hard-to-remove, foul smelling spray. They simply lift their tail and blast their foe.
Adjective related to or resembling a horse
The equine seahorse is rare among fish because it is monogamous, and mates for life. Rarer still, the male seahorse bears the unborn young!
Adjective having a lustrous or brilliant appearance
iridescent
Males have iridescent blue bodies and multicolored tail feathers ending with colorful 'eyes.' As the males strut, females choose their partners based on the beauty of the display.
Noun somebody highly skilled at something
Not a separate species, but a rare color variant, black jaguars are powerful hunters. These carnivores are masters of ambush.
Adjective showing a fondness for causing trouble in a playful way
Mischievous squirrel monkeys appear to be enjoying the free transport as they ride around on the back of a capybara.
Noun well known for some undesirable feature, quality, or act
The Black widow is notorious for its bite, as its venom is reported to be 15 times stronger than that of a rattlesnake.
Adjective lacking grace in movement or posture
The ostrich may look ungainly, yet they run quickly and efficiently. The secret is their springiness - ostrich tendons store twice as much "elastic energy" per step as we do.