In 2004, there were 6.8 million dogs and 9.58 million cats in the UK
There are 6.1 million cat owning households, 5.2 million dog owning households, 4.1 million fish owning households, 1.96 million rodent owning households and 1.39 million bird owning households
Dogs are dichromats which means that their eye sight is equivalent to red-green colour blindness in humans
Dogs have nearly 220 million smell-sensitive cells, compared to 5 million in humans
Dogs detect sounds as low as 16 to 20 Hz frequency, compared to 20 to 79 Hz in humans
Dogs sweat through pads on their feet. Their main method of controlling body heat, though, is by panting.
Dog breeds show more variation in size, appearance and behaviour than any other domestic pet 208 breeds of dog are registered with The Kennel Club
The smallest dog is a Chihuahua and the largest dog is a Great Dane
An average dog litter consists of approximately 6 puppies Most dogs have pink tongues apart from the Chow Chow and the Shar-pei, both of which have black tongues!
Dalmatians are born pure white, with their spots developing as they mature!