A recent survey rated border collies, poodles and German shepherds as the brainiest breeds, along with a number of other work dogs _ Golden retrievers, pinschers, Shetland sheepdogs and Labrador retrievers, valued for their trainability and ability to make discretionary calls in their responses to certain situations.
42.
Herding instincts and trainability are measured at non-competitive herding tests, and basic commands are sometimes taught through herding games, where rules such as " stay ", " get it " and " that'll do " are applied to fetching a ball or chasing a yard broom.
43.
The prairie falcon is also sometimes hybridized with the peregrine falcon or gyrfalcon to create a falcon combining the aggressiveness and heat tolerance of the prairie falcon with the easier trainability and slightly greater strength of the larger peregrine subspecies, or the greater horizontal speed and significantly larger size and strength of the gyrfalcon.
44.
After initially breeding working line German Shepherd Dogs with Carpathian wolves " ( Canis lupus lupus ) ", a plan was worked out to create a breed that would have the temperament, pack mentality, and trainability of the German Shepherd Dog and the strength, physical build, and stamina of the Carpathian wolf.
45.
Killer whales are well known for their performances in shows, but the number of Orcas kept in captivity is very small, especially when compared to the number of bottlenose dolphins, with only 44 intelligence, trainability, striking appearance, playfulness in captivity and sheer size have made it a popular exhibit at aquaria and aquatic theme parks.
