Complex sentence: The lynx's colouring, fur length and paw size vary by its climate range--in the Southwestern United States, its short-haired fur is dark and its paws are smaller and less padded.
Split into simpler sentences: The lynx's colouring, fur length and paw size vary according to the climate in their range. In the Southwestern United States, they are short-haired, dark in colour and their paws are smaller and less padded.