I like this one. How tall is it, exactly?
The legs on the rats are a bit long...as someone who kept pet rats as a kid, I can tell you that rats have shorter legs & are usually a bit fatter (when they're healthy). OTOH you don't want too much realism in a piece like this. F***ing excellent job on the insane-looking deer skull! Also the rats' fur has good texture.
What would really help here is better presentation. Hang up the drawing so it's straight, tape it down if you must, & take a decent picture with good lighting. Crop out the surroundings & this piece would look better.
...I could almost see this as a back tattoo, for the right person.