DogDay

He was released from his chains and taken to the hospital. There, they bandaged his right eye, left arm, and chest. A scar remained on his left eye. His fur was tousled. He wore a purple cloak, covering his exhausted and bandaged body. Around his neck was the same pendant, now glued together, having previously been broken in half.
I'm still not thrilled with CatNap. He looks tired and worn. He's not as cheerful and sunny as he used to be, but he'll still help you in times of need and support you.

This is DogDay, the sunny, strong, and determined leader of our animals! Each of them believes he can find the bright side in any situation and will offer a friendly word of encouragement if they're feeling down. He'll always support his friends, no matter what.

The Big Bodies version of Dogday is known for his defiance of CatNap and Prototype, but this wasn't always the case. He was initially quite loyal to 1006, much like CatNap himself, until he rebelled against them along with the other Big Bodies, the Smiling Beasts, and other experiments, likely due to Prototype's authoritarian behavior.
Following his coup, DogDay appears to treat CatNap with disdain, dehumanizing his former ally and calling him "that creature" before revealing his brutality towards the "heretics."
His relationship with Prototype is more ambiguous and is shaped by CatNap's actions in the name of his idol, though it is clear he is not thrilled with his former leader.

DogDay is an anthropomorphic dog with an orange coat that contrasts with his expressive black eyes with white pupils, floppy ears, and smooth black nose. His muzzle and belly are a sunny yellow, while his paws, ears, and the left side of his muzzle are golden brown. Like other Smiling Critters characters, DogDay is perpetually grinning widely with a toothless mouth, the inside of his mouth shrouded in a mysterious darkness. In the center, a charming golden sun pendant is displayed, surrounded by glowing orange rays. DogDay also exudes vanilla flavor from a small atomizer in his mouth.
In the "Larger Body" version, Dogday appears battered and monstrous. All that remains of Dogday is a thin, decrepit torso, stained with blood and held together by a brown leather belt, likely to hold the remnants of his entrails in place. Large black sutures connect both arms to his body, terminating in two massive, humanoid hands. Like CatNap, he has black pupils with white irises. Like CatNap, he has large, black eye sockets with no visible eyes and a large, gaping mouth.