Both melanism and albinism have been observed in wild blackbuck. Unlike melanism, albinism would make a Leopard more conspicuous and a less successful predator. In jaguars, the melanism allele is dominant. Partial melanism in badgers is known, and albinos are not uncommon. They also show an adaptation to high altitudes called altitudinal melanism. A 24-base pair deletion causes the incompletely dominant allele for melanism in the jaguarundi. The frequency of dark-coloured moths increased at that time, an example of industrial melanism. The opposite of amelanism is melanism, a higher percentage of melanin. There have been reports about cheetahs of other color variations, such as melanism and ticked. The term melanism refers to black pigment and is derived from the . There were conflicting ideas as to the biological basis of this industrial melanism. Several species exhibit melanism with all-black individuals. Despite anecdotes to the contrary, all-black coloring (melanism) has never been documented in cougars. Melanism related to the process of adaptation is called adaptive. Frequency of melanism appears to be approximately 11% over the leopard's range.