On some of them, the height of the far leg makes it look as though they aren't standing on even ground according to the view. Such as the yellow horsething and green birdthing next to it.
Also, some of them don't seem to match the perspective of the others, such as the firey looking bird in the second row as well as the yellow one directly beneath it. It looks almost completely side on.
Also the red dragon has this problem, but it's less evident due to the hind legs' raisedness.
Some of the creatures only have one set of legs on the near side, with the far side limbs being strangely absent.
My favorite is the middle one in the last line.
And the fish.
The wasp's got a flat butt.
Aside from those things these are very nice, and keep up the good work.