I don't see the tumor on the top two pics, which on the bottom ones it hang well below his chin line. I agree, I do not think it is the same buck. I think they are of different age. I think the top one may be closer to 2.5. The bottom one may be closer to 1.5. As everyone else, I'm not his daddy so I dont know for sure, just my two cents.

On dif subject, is it my eyes or does the top one have an arrow just barely hanging from his rib cage. If he does, someone needs a better bow, should wait till it gets in range next time, or needs to cut down that brush he shot through.