The Border Collie is the smaller of these two breeds, with males measuring 19–22 inches and females coming in slightly ...

Border collie temperament. Border collies were selectively bred to gather and fetch livestock. Through this breeding, they became intense, energetic, trainable dogs .

The border collie stares intensely at artwork of a cat with the breed's herding eye. TikTok @kelsieg23. In a later video posted to her account, Kelsie proved her pup isn't affected just by artwork ...

Chaser is now world famous as the dog who knows more than 1,000 words, the largest known vocabulary of any animal except humans. Besides proper nouns, she knows verbs, adverbs and prepositions.