a dog in vertical position. Let's put it horizontally
which is more like a dog.
As I mentioned in character Pig, ancient Chinese wrote the characters on bamboo slips, it is easier to draw the animal in vertical on bamboo slips because they are very narrow.
Its small seal script is
which is changed so big that people can't relate it to its shell bone script. The bottom part is dramatically simplified.
Its clerical script is
I should point out that there is another character for Dog, which is very popular too. Let's see its small seal script
the left radical,
is very similar to the Dog character, which is an indictive part for animal. If a character has this "Dog radical", it is an animal. The right part is the pronunciation of the character. This kind characters are called phonogram. One radical shows what the character related, another decides the pronunciation.
This one actually, the pronounciation of the character is not same as it right part pronunciation. It happens because the pronunciations of many characters has changed from their original ones.
The current standard printing script for Dog is
Its Pinyin is "Quan3".
Another one is
Its Pinyin is "Gou3".
They two are totally different in writing and pronunciation, but both mean Dog.