Gregory's wolf (Canis rufus gregoryi), also known as the Mississippi Valley wolf,[1] was a subspecies of the red wolf. It was declared extinct in 1980. It once roamed the regions in and around the lower Mississippi River basin.
This wolf was recognized as a subspecies of Canis lupus in the taxonomic authority Mammal Species of the World (2005). This canid is proposed by some authors as a subspecies of the red wolf (Canis rufus or Canis lupus rufus) .
The subspecies was described as being larger than the Texas red wolf, but more slender and tawny. Its coloring includes a combination of black, grey, and white, along with a large amount of cinnamon coloring along the back of its body and the top of its head. It weighs around 60to on average.[2]