Toon Tellegen was born in the Netherlands in 1943. He was a doctor before he started writing for children in the early 1980s. His books are now considered classics of Dutch children's literature. Marc Boutavant is a graphic artist, illustrator, and comic strip author. He has illustrated numerous books for children. He first started to create his own animal universe, with Mouk at the centre, in 2002. He was born in Bourgogne in 1970 and lives in Paris.

"A book that invites readers to noodle around with their own relationship to anger in all of its various forms. . . . Like the lovely classic, The Little Prince, this is a book unafraid of deeper emotions and ambiguities."—Publishers Weekly

Toon Tellegen was born in the Netherlands in 1943. He was a doctor before he started writing for children in the early 1980s. His books are now considered classics of Dutch children's literature. Marc Boutavant is a graphic artist, illustrator, and comic strip author. He has illustrated numerous books for children. He first started to create his own animal universe, with Mouk at the centre, in 2002. He was born in Bourgogne in 1970 and lives in Paris.

"A book that invites readers to noodle around with their own relationship to anger in all of its various forms. . . . Like the lovely classic, The Little Prince, this is a book unafraid of deeper emotions and ambiguities."—Publishers Weekly