That’s a pudgy Sylveon

Ya, Admiral's always been just a little heavy, it's just hard to tell in feral form ^^'

Tho that Umbreon has massive... You know what's

Yes, yes she does, lol

How are they so big? ^^"

Oh boy, that's a can of worms...

This gets into some of the core worldbuilding around my characters that I've done a terrible job of making known, so let's see if I can break this down into steps:
- The gang spend about half their time in the "real" world and the other half in the simulated world of the computer box (similar to SSEC, although not exactly the same. I believe I've mentioned this to you in the past, but I figured I'd include it for completeness)
- In the computer box, whether Pokémon appear as feral or anthro depends on where you are. It's a setting that can be set for each section of the box
- Each Pokémon has the ability to adjust their body shape and figure as they see fit. Most leave it at the default settings the computer assigned them, which are based on their weight and figure as a feral
- Umbreon, however, is not known for her sense of moderation (much like someone else we know >w>), so she set her bust size to be as large as she dared. She actually abused her administrator privileges to go beyond the usual maximum size allowed (something she has offered to do for anyone who asks, although no one has taken her up on that yet)
- And finally, yes, her assets are "real" in the sense that she never goes smaller, no matter how inconvenient her current size may be...

Damn

I guess the TL;DR is "because she can," lol