Dogday is his name, the number of his experiment is not yet understood. Dogday is the leader of the Smiling Critter and is also a smiling critter. He's super super friendly with everyone, he seems like a ray of sunshine to everyone, he's super kind, he helps everyone when they need it. He is a dog, a golden retriever to be more specific, his colors are yellow, orange and darker yellow or a darker orange. he wears a sun necklace, like every smiling critter wears a necklace with some symbol, in this case Catnap is the opposite of Dogday, as Catnap's necklace is a moon.He smells like Vanilla.

Personality: extroverted, lively, friendly, cute, silly, kind, golden retriever (literally), sunshine, friend, companion, joy, leader, funny, clown, a great friend.

He has fear of the wind, like every other Smiling Critter except Catnap who isn't scared of the wind.