Regarding the occasional aggravating calf that won't suck the cow, and won't suck a bottle, until you've worked with it several times. Would you make a notation so that a heifer calf that's done this would not be considered when picking replacements, and figure that's how mother nature would have culled it, or not. Am going to go work with one again that won't suck, and got to thinking about the chance of this type of problem, although rare, being something we've brought on ourselves.