If you're familiar with the character of Daxter from "Jak and Daxter" you're aware that he's something of a ferret kind of creature. At a point during the game he turns into a human form. These are development sketches of him in that way from the year 2000 when the project was being developed. The first drawing was for a random character whose look Naughty Dog liked. Later on it was used as the basis for the altered Daxter as can be seen in the subsequent images.