Bucky is the biggest of the lot weighing in at 450g. They all seemed similar sizes at birth but he’s now the biggest(and the most focused on feeding, never missing an opportunity). Bucky wears a brown collar.

Currently the biggest by 10g, Bucky was 790g at the end of week 1. Always found at the bottom of the puppy pile with Wanda on top of him.
Bucky (new name Treacle) week 4. Still the biggest.
Bucky week 6, weighing 1800g. He’s not far off escaping the puppy pen.