Top 20 breeds: Yorkshire terrier

Group: Toy

Average size: 22.5–23.5 cm (small)

Life expectancy: 14 yrs

Character: Energetic and willing to learn

Amount of exercise: Although smaller dogs, they need more exercise than you might think. Time off the lead will help

Grooming needs: Needs lots of grooming and dental care

Specific requirements: Strong working history means they need lots of play and mental stimulation

Suitable environment: Town or country

Can be prone to: Patella luxation (slipped kneecap), Legge-Perthes disease, tracheal collapse, keratoconjunctivitis sicca (dry eye), retinal dysplasia, cataracts, heart conditions

Check with the breeder for the family health history