Calves are born with teeth.
they dont. They only have bottom teeth for grazing.
They should, because at that age they're already start to eat more "harder" foods.
The calves are actually sexually mature and no longer "calves" by the time they lose their baby teeth, which is in fact around 2 years of age. You don't find this in feedlot steers because they have been killed and butchered (at around 14 to less than 24 months old) before they've dropped their baby teeth to be replaced by new ones. You find this more often in breeding bulls that are around 2 years of age, and heifers that have just had their first calf.
Any age.
Yes, most newborn calves have a few teeth already sprouted by the time they are born.
Yes, pretty much. The molars themselves are not exactly baby teeth as they don't fall out unless there's some sort of infection in the molars, but the incisors are baby teeth and will fall out when the animal reaches around two (sometimes three) years of age.
They can get grubs at that age if there is no deworming or anti-parasital program on your farm. If you deworm at the appropriate times, especially the cows, then calves at this age will not get grubs. But if you are concerned about bottle calves, then you should see your large animal veterinarian for a dewoming program for these bottle calves of yours. I would also recommend seeing what program is best for lactating cows with calves.
Calves are born with a set of teeth called deciduous teeth that are eventually replaced by adult teeth. These deciduous teeth serve the calf well for nursing and acquiring nutrients from milk. As they grow, the adult teeth will emerge to enable the calf to properly chew and digest solid food.
Highland calves are typically weaned between 6 to 10 months of age, usually when they are consuming enough solid food to meet their nutritional needs. However, weaning age can vary depending on individual circumstances and management practices.
Most calves are weaned at around 6 to 10 months of age.
Molars on top and bottom of the jaws are flat for chewing tough plant material. Cattle do not have canines, and nor do they have incisors on the top of their jaw. The bottom incisors are flat and jut outwards. Calves are in fact often born with some of their incisors emerged, and their baby teeth fall out and are replaced with adult, permanent teeth when they reach 2 years of age.