Sweetlee the Puppy from Little Pretty-Glitter n’ Grow
Little Pretty were produced by Mattel from 1989-91. They were a series of kitties and puppies with plastic bodies and long brushable hair. Each one also had a different symbol (like My Little Pony). 
“The Glitter ‘N Grow set features kitties and puppies with lovely long hair…or fancy long tails! Girls gently pull hair to make it 'magically’ grow! Luscious long hair makes styling easy and fun! Shimmer-shine bangs give a sparkly look to every pretty hairstyle!”