Navy vs Marines. There are several branches that make up the United States armed forces. They are the Army, Navy, Marine Corps (marines), the Coast Guard and the Air Force.
Canine Parturition/Whelping. The best way to know when the dog is going to whelp is to have ovulation timing and specific hormone and breeding dates. Often we do not have that information, and since the average gestation is 63 days but can be between 57 to 72 days from a single breeding, it can be difficult to tell when the dog is going to whelp. Canine parturition/whelping occurs in 3 stages. The first stage is when the uterus begins to contract and cause the cervix to dilate. Stage one can last 6 to 12 hours in the dog. Signs that you may see in the female are restlessness, panting, pacing, or nesting type behavior.
From this point on swallowing is an entirely reflexive action (1,3). Pharyngeal phase. The third phase in the swallowing process is the pharyngeal phase. When the swallowing reflex is triggered, the pharyngeal phase starts. This phase is the most complex phase of swallowing, because it involves many events which occur in a rapid sequence.