Compare the two sculptures Balto and Armadillo - Bipedal Walking.
Both of these sculptures have some elements that are realistic and some that are abstract.
When a sculpture is defined as realistic, it means that the sculpture looks like an object, person, or animal. Some sculptures are more realistic than others because the artist uses the elements of style to make the sculpture look more like the "real thing." Some sculptures are less realistic because the artist uses the elements of style to express the resemblance and feeling rather than the look of the "real thing."