来自MSN7 个月
Border Collies
Border collies are smart dogs with tons of energy and a lust for hard work. This working breed packs a powerful punch in a compact body (most only reach 45 pounds max), but, manageable as their ...
Neil deGrasse Tyson tested the cognitive skills of Chaser, a border collie trained to recognize over 1,000 toys by name.
Border Collie Named the smartest dog in psychologist Stanley Coren's book The Intelligence of Dogs, Border Collies are world-renowned for their intelligence. Axel agreed: "Border Collies clearly ...
Border Collies are not for everyone. Hardworking, eager to please, and total workaholics, it takes a lot to tire them out.