When we had two with severe vaccine reactions in the past we took extra precautions and stopped vaccinating. The USDA approved one is IMRAB-3. If you use newspapers with color printing call the printing manager at the paper to be sure they are using vegetable dyes. If they are using heavy metal dyes either don't use those pages or bury them within safer black and white pages. Size is NOT an accurate determinant of age since it can be negatively impacted by too many variables. Go by dental eruption: Maxillary: 50 days Canine 53 days Premolars 2 - 4 60 days Molar 1 Mandibular: 50 M 1 60 P 2 67 P 3 74 P 4 and M 2 Carla, that's one of the best posts in months and months!!!! It belongs on webpages, newsletters, and magazines in conjunction with Bob's stuff as a joint article. Sukie [Posted in FML issue 2628]