What kind of hog was in Old Yeller?

In "Old Yeller," the hog mentioned is a wild hog, specifically a large and aggressive boar. This type of hog poses a significant threat to the farm and the characters, particularly due to its ferocity and the danger it represents to livestock and people. The encounter with the wild hog highlights the challenges faced by the family in the story, emphasizing themes of bravery and survival.