 Cougar coloring is plain ( hence the Latin concolor ) but can vary greatly between individuals and even between siblings . The coat is typically tawny , but ranges to silvery @-@ grey or reddish , with lighter patches on the <unk> , including the jaws , chin , and throat . <unk> are spotted and born with blue eyes and rings on their tails ; juveniles are pale , and dark spots remain on their flanks . Despite anecdotes to the contrary , all @-@ black coloring ( <unk> ) has never been documented in cougars . The term " black panther " is used colloquially to refer to <unk> individuals of other species , particularly <unk> and <unk> . 
