I love the softness of the background. It's absolutely warm and perfect; it fits the mood beautifully. You executed the character interaction spot on. I like how you managed both the perspective of the trail and the hills. I'm still in awe over the warm feeling you get from it.

The canine's anatomy is well done on the front half. The ears look good for the view they're put in. I can't really say anything about the ferret (I think that's what it is. Assuming it is 'cause of the user's name) anatomy 'cause...I don't draw ferrets.

The only thing that threw me off would be the hind end of the dog. Both of his back legs are up in the air, but it's obvious he's walking. The closest back leg looks fine, it's the farthest back leg. Given the way the leg is stretched out, the foot part wouldn't be bending back in. Plus, the hock is a bit too pointed and it thins out oddly before hitting the foot. Had it been on the ground, it would have been perfect. It's still a stunning image; the hind end just throws me off.

Also, the tail tapers a little too suddenly, but I'm thinking it may be because you ran out of canvas? But, that's just being nitpick-y.

But overall, a very nice, beautiful, stunning image.

What I love about this here is your dealing with color and shadow. I love how your characters vividly stand out against the background, and how the background itself is nice and subtle, giving all the more emphasis to your characters. The overall choice of colors and the soft shadows give out a feeling of warmth, serenity, happiness, love and tenderness, and you just can't help but smile as you're looking at this. The texture of the fur and the grass is a nice touch, too. You really feel like you can reach out and touch it all with your own hands.