You said you wanted critique?
It's generally really good, but the right hand of the yellow fox on the left seems awkward and unnatural in how the fingers are closed. Also, the shading seems inconsistent, and I think it would look better with the belly fur on the orange fox being shaded completely if your light source is coming from the upper-right. Finally, I think the yellow fox's left ear should be moved a bit upward, as it looks like it's placed a bit below the right ear.

Aside from that, it's a great job! Much better than I could do with anatomy, line, and color!