The Rottweiler is just like any other breed and the usual gestation length is 63 days. If the dog goes more than 2-3 days beyond that, a Veterinarian should be contacted. The puppies may need to be delivered surgically. You will notice a drop in the temperature by several degrees from the normal of 101.5-102. This indicates the Mother-to-be will deliver usually within 24 hours. Rottweiler's can sometimes have large litters with as many as 10-12 puppies. If this is the case they can sometimes deliver a few days early.