Wanda and the Wild Hair by Barbara Azore, illustrated by Georgia Graham

From chapters.ca:
Wanda has a problem: she loves her wild hair dearly, but it drives all the adults in her life to distraction. She loves the way it feels when she touches it. She loves the way it looks when she pats it in front of the mirror. But her mother always nags her to wash it, her father wants to take her to the poodle parlour for a trim, and her teacher threatens to ask the principal to cut it off. What can poor Wanda do? A series of mishaps with a magpie, a cat, and a large English sheepdog finally convince Wanda that her beautiful hair has to be changed. Kids who love their hair will identify with Wanda’s playful solution to make her adults happy.