O.K. 'Babes', here are some questions!

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Well, I think the PeeWee thing is just a joke for the film. It was probably little people playing the pigs, like the Munchkins in Wizard of Oz several years later.

Angelo Rossito is listed as playing, I believe, the 2nd pig. He was definitely a little person, who had a long career in film.

cinefreak

A peewee as used in the film used to be called a "cat"

Tip cat, also called ONE-A-CAT, is an outdoor game dating back at least to the 17th Century. It was introduced to North America and elsewhere by English colonists. The game was widely popular in 19th-century Great Britain and in early 20th-century North America.

Although there are many varieties of the game, all involve a stick about 3 ft (1 m) long used as a bat, and a piece of wood (the cat) about 4 in. (10 cm) long, 1 to 2 in. (2.5 to 5 cm) thick, and tapered at the ends. The cat is placed on the ground, struck at one end to propel it upward (tipping the cat), and then slammed with the stick as far as possible. In one version, the batter tries to round the bases, as in baseball, before the fielder retrieves the cat and throws it back to home base. If a batter misses the cat three times or if a fielder catches it on a fly, the batter is out. Earlier versions of the game are based on guessing the distance that the cat is hit, scoring points according to the number that comes up on a four-sided cat, and running from base to base on a large circle while the cat is being retrieved. Some authorities consider tip-cat a forerunner of baseball and cricket.

http://www.1771.org/cd_tipcat.htm

As to the Three Little Pigs, the first and third appear to have been children, judging by their birthdates in the bios (follow the credits) but the Second Little Pig was a little person standing 2 feet 11 inches, and 26 years of age.