Pigwidgeon

Pigwidgeon (also known as Pig) is Ron Weasley's pet owl.

History
After Scabbers, Ron's old pet rat, disappeared, having been found out to be Peter Pettigrew, Sirius Black, who felt partly responsible for Ron's loss of a pet, sent him Pigwidgeon to which Ron (to the surprise of Harry and Hermione) lets Crookshanks sniff him to check if he really was an owl. Pigwidgeon is very hyper, loud and very small and has been known to show off for people, this however annoys other owls which forces Ron to keep him in his room, he has been described by Harry as resembling a "fluffy tennis ball". He is usually excited for a job to deliver letters even though most of the time they are usually heavy for him. He also delivered food to Sirius when he was hiding.

Pigwidgeon was named by Ginny Weasley, Ron's sister, thinking the name was cute. Ron tried to change it, but the owl would not answer to another name. Ron Weasley is very attached to Pig since this was his first owl. In public, however, he acts very rude to Pigwidgeon.

Behind the scenes
J.K. Rowling has said on her website that Pigwidgeon is a Scops owl. These owls are tiny gray owls with little tufts of hair on their heads. This makes sense as Pigwidgeon is said to fit in a person's fist. Scops owls live in open country with isolated trees and lightly wooded areas containing clusters of trees. They may also be found in run-down buildings, caves, bush-lands, and park-like habitat.