The numbers 1 through 31 atop a pig. The pig measures 2 inches square. There are also 5 blank pigs so that special days such as holiday, birthday, or no school can be written on them. These can be used anytime during the year for calendar numbers or for a themed activity in a math center.
If you like these pigs, you might also like my other calendar designs. Check out my leaves, sailboats, pumpkins, shamrocks, and more. If there is a certain shape you are looking for or you need a different size for your calendar, let me know and I'll be happy to put something together for you.