Agouti-based colors include but are not limited to agouti, cinnamon, and fawn. The appearance of mammals with recessive agouti mutations is typically dense black. Tabby cats are striped due to the agouti gene. He was unable to produce any mice that were homozygous for the yellow agouti allele. Laboratory mice can have a variety of coat colours, including agouti, black and albino. Other species like the agouti, other carnivorans, primates, common opossum and tapir are generally avoided. Increased methylation is correlated with increased expression of the normal "agouti" gene. Bay is the result of the agouti gene acting upon a black base coat. However, more modern study attributes the variation to 3 different alleles of the Agouti gene. Numerous mammal species live on the islands, notably raccoons, agouti and mongoose. In horses, point coloration is produced by the action of the agouti gene. Their typical prey are pacas, agouti and capybaras, all large rodents. Crossbreeding can result in many other variations, such as gold tipped steel and chestnut agouti. The color black is primarily controlled by two genes&colon; Extension and Agouti. The function of ASP differs to murine "agouti".