The Border Terrier is a level tempered dog that you might see being used as a therapy dog. They are known to have a high capacity to think independently and are very smart dogs. Terriers are extremely agile and have powerful jumping ability.
Borders love to run so daily trips to the park or out for a long run is just what the Border Terrier needs to keep them active. Natural born foxhunters, they were used back in the day to flush the foxes, otters and badgers out of their holds. It's always amazing to see this quick dog in action and jumping despite their how short their legs are.
Border Terriers are natural born runners. Their innate sense of the chase make these dogs a breed that you need to watch around small animals like mice, rabbits and such. They can learn not to chase the family kitten provided you raise them together but when you are out walking, best to keep them on a leash because they are likely to bolt if they see a stranger cat.