Patterdale terriers are often referred to as fell terriers. Maybe people mistake the term ‘fell terrier’ for a breed, which it’s not. The term fell terrier really refers to a specific group of dog breeds that come from Great Britain that are long legged working terriers. This could include the patterdale terrier, Lakeland terrier and the Scorrier terrier. Therefore fell terriers are a type rather than breed of dog.