Meet Harvey: Britain’s brightest dog who recognises 221 toys and can fetch each one by name

Harvey, a seven-year-old Border Collie, is Britain's brightest dog. He knows over 220 toy names. His owner, Irene Hewlett, started training him as a puppy. Harvey's intelligence is being studied by scientists. Researchers believe dogs like Harvey could help people with daily tasks. His skills show advanced cognition and problem-solving abilities.