12 weeks, 12 weeks and Suzy was 14 1/2 weeks. Vet specializes in cropping won't take them under 12 weeks and they require 2nd vaccinations. My older Dobies both came out fine, Suzy just had the tape taken off hers, she'll be 6 months. I have a medium crop on Roxy and a medium show crop on Alex & Suzy. Same thing with this vet, he has probably same amount of experience.