Grumpy Monkey by Suzanne Lang Grumpy Monkey Party Time! by Suzanne Lang Grumpy Monkey Up All Night by Suzanne Lang Grumpy Monkey's Little Book of Grumpiness by Suzanne Lang Grumpy Monkey Freshly Squeezed by Suzanne Lang Grumpy Monkey Who Threw That? by Suzanne Lang Grumpy Monkey Oh, No! Christmas by Suzanne Lang Grumpy Monkey Yuck! by Suzanne Lang Grumpy Monkey Book and Toy Set by Suzanne Lang Grumpy Monkey Are We There Yet? by Suzanne Lang Grumpy Monkey Says No! by Suzanne Lang Grumpy Monkey Valentine Gross-Out by Suzanne Lang Grumpy Monkey Don't Be Scared by Suzanne Lang Grumpy Monkey Spring Fever by Suzanne Lang