Answers: 1.Circulatory system-pumping blood to and from the body and lungs with the heart 2.Digestive system-digestion and processing food with salivary glands, esophagus, stomach, liver, gallbladder, pancreas, intestines, rectum, and anus.
During the tie, the male turns around so the dogs are back to back and can defend themselves. The tie typically lasts 20 to 40 minutes. It may be just a few minutes, and dogs can mate successfully without becoming tied at all. The evolutionary reason for the tie is unknown, but it's assumed that if a male dog is tied to a female, it prevents other males mating with her. Unwanted Mating.
Bungee leashes stretch. They may be made of rubber tubing or may just have an elastic section. Bungee leashes are marketed as a way to help control a dog who pulls on a leash. These leashes are designed to minimize the risk of injury to your dog's neck as he pulls. However, the best way to get your dog to not pull is to train him to walk politely on a loose leash.