That will be great if you can give personal feedback for designers. Feedback and rank will attract other designers to submit their ideas so you will get more option for your logo.
the paw print is better on number 1 than number 5 (it's anatomically reversed in number 5) three and four are a little busy- not fond of the hands but like the concept (like the hands built into the saguaros on the other ones better)
More discussion about the paw print- overall we like number 1 paw print better but the bigger paw pad should be with the narrow part up and the smaller toe pads wrapped sort of around it
Would it be possible to switch the paw print from number 5 to number one (i.e. keep the thickness of the cactus and the size of the sun) and to somehow enlarge the words Veterinary Oncology?