The breed of the Thoroughbred horse is only about 300 years old, although horse racing has been popular in England since Roman times, and can be traced back to Central Asia among ---------- ?
Ostriches are such fast runners, they can outrun a horse. Male ostriches can ---------?
In ancient Rome, auburn-haired puppies were sacrificed to ensure a plentiful ----------?
Communication within the prairie dog community is crucial to the creatures' survival. An appointed sentry, spotting a predator, will give a distinctive warning cry, which instantly sends all others grabbing up babies and scurrying to the safety of their burrows. An all-clear call later announces that danger is passed. Experts are fascinated by the prairie dogs' ----------?