To save you time, here are three direct (hypothetical but realistic) paths to get a free immediately:
It is widely available as a lift-the-flap board book at retailers like Pan Macmillan Other Squirrel Stories:
The story concludes with the friends admiring their finished snowman before Squirrel heads inside for a warm meal and bed.
Use the PDF as a hook. Ask: "If a squirrel builds a snowman, does it mean it isn't cold? Why don't squirrels freeze?" (Answer: They have thick fur and shiver to generate heat).