The Sneezing Weasel (1938)

"The Sneezing Weasel" is a 1938 Animation movie directed by Tex Avery and starring by Tex Avery, Bernice Hansen. When Mama hen takes her chicks out to get breakfast, little Wilbur is soaked in a sudden rainstorm and comes down with a head cold. Mama puts him to bed, then goes back out to get the doctor. A conniving weasel, seeing Mama leave, disguises himself as a doctor and comes calling on the unattended chicks.