The Patterdale Terrier, while adaptable to various environments, is first and foremost bred to be a hunting dog. A confined or sedentary lifestyle, such as city or apartment living, does not meet the needs of a Patterdale Terrier. These dogs require an extraordinary amount of human attention, outdoor activity, exercise, discipline, and an understanding of their hunting nature. They have been known to train their owners more often than not.
Patterdales can be very aggressive with other dogs, and more than two should never be kept together unattended. There have been many instances of terriers being hurt, even killed, by their fellow terriers. It is imperative that prospective Patterdale owners understand this part of the terrier's nature. Special facilities and handling are absolutely necessary when owning a Patterdale, especially when owning two or more. Their natural hunting instinct also brings out aggression towards other small animals such as cats, gerbils, and guinea pigs.
The courage of the Patterdale is never in doubt; they often take on adversaries twice their size. They require firm, consistent, and responsible handling; they are very intelligent, determined, and bold (sometimes to the point of abandon, which could be fatal).
While outdoor activity and exercise are essential, the Patterdale should never be permitted to roam unattended, even in remote country settings. The Patterdale is, above all, a hunting dog - and will go to ground at every given opportunity, to any quarry - they are afraid of nothing. Many Patterdales have been known to stay in an active earth for days, even weeks, without food or water because of the strong instinct bred into them to stay with their quarry. It can be a very frightening experience to lose your terrier and an impossible situation for an untrained owner inexperienced in earthwork; the results could be tragic.