Frog is Sad

Frog is miserable, and he cannot see why. Nobody has upset him, and nothing has gone wrong particularly, but he still feels blue. Then one of his stalwart friends makes him laugh - and suddenly he realises he's not sad anymore. He still doesn't know why he was so sad in the first place, but it doesn't matter. A perfect book to explore emotions and mood swings with the under 5s.