c.1300, to call, call out; to ask or demand by virtue of right or authority, from accented stem of Old French clamer to call, name, describe; claim; complain; declare, from Latin clamare to cry out, shout, proclaim, from PIE *kele-(2) to shout, imitative (cf. Sanskrit usakala cock, literally dawn-calling; Latin calare to announce solemnly, call out; Middle Irish cailech cock; Greek kalein to call, kelados noise, kledon report, fame; Old High German halan to call; Old ...
Most black panthers hunt at night. They are masters of concealment and use every available rock, bush, or depression to hide themselves and get as close as possible to their prey. As they wait, they are silent and cautious.
Animals rely on some senses more than others. Hunting animals, like the cheetah, need very good eyesight to find their prey. Nocturnal animals often have very large eyes to maximise the amount they see at night, but also rely heavily on their sense of hearing.