Boyd, Zeus, Astra - Size Comparison

I couldn't help myself and just had to roll those virtual dices and create even more canine characters, because i only have like, a couple dozen of them. -__-

Anyhow... I learned about this RPG , which accepts only dogs with no sparkles, and as many characters as you want! So i believe this last three additions to my OC pool would make good candidates for that RP.

Because i'm not very familiar with these dog breeds (i've never seen one in real life, which sucks), i decided to make a size chart.