Fur clothing left their original pattern and color. Fur may be shorn down to imitate the feel of velvet, creating a fabric called shearling. Common animal sources for fur clothing and fur trimmed accessories include fox, rabbit, mink, raccoon dogs, muskrat, beaver, stoat (ermine), otter, sable, seals, cats, dogs, coyotes, wolves, chinchilla, and opossum and common brushtail possum. Some of these are more highly prized than others, and there are many grades and colors. In Europe and Asia, cheap and plentiful dog and cat fur is sold under different names to disguise the origin from shoppers in the United States, such as
PC Paintbrush competitor, Mouse Systems, bundled their mice with Mouse Systems' "PCPaint" in 1984. At Christmas 1984, amidst record sales volumes in the home computer market, Microsoft had created a "sidecar" bundle for the PCjr, complete with their mouse, but with their competitor's product, "PCPaint". With the release of Paintbrush the following year, Microsoft no longer needed to sell the software of their competitor in the PC mouse hardware market in order to have the same market advantage. Microsoft's mechanical mice outsold Mouse Systems' optical mice after a few years, but "PCPaint" outsold Paintbrush until the late 1980s. Unlike most other applications