All of the wild members of the genus Canis display complex coordinated parental behaviors. Wolf pups are cared for primarily by their mother for the first 3 months of their life when she remains in the den with them while they rely on her milk for sustenance and her presence for protection. The father brings her food. Once they leave the den and can chew, the parents and pups from previous years regurgitate food for them. Wolf pups become independent by 5 to 8 months, although they often stay with their parents for years. In contrast, dog pups are cared for by the mother and rely on her for milk and protection but she gets no help from the father nor other dogs. Once pups are weaned around 10 weeks they are independent and receive no further maternal care.
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Some people believe that the only way to transform a disobedient dog into a well-behaved one is to dominate her and show her who’s boss. However, the “alpha dog” concept in dog training is based more on myth than on animal science. More importantly, it leads misguided pet parents to use training techniques that aren’t safe, like the “alpha roll.” Dogs who are forcibly rolled onto their backs and held down can become frightened and confused, and they’re sometimes driven to bite in self defense.
Resource guarding is exhibited by many canines, and is one of the most commonly reported behaviour issues to canine professionals. It is seen when a dog uses specific behaviour patterns so that they can control access to an item, and the patterns are flexible when people are around. If a canine places value on some resource (i.e. food, toys, etc.) they may attempt to guard it from other animals as well as people, which leads to behavioural problems if not treated. The guarding can show in many different ways from rapid ingestion of food to using the body to shield items. It manifests as aggressive behaviour including, but not limited to, growling, barking, or snapping. Some dogs will also resource guard their owners and can become aggressive if the behaviour is allowed to continue. Owners must learn to interpret their dog's body language in order to try to judge the dog's reaction, as visual signals are used (i.e. changes in body posture, facial expression, etc.) to communicate feeling and response. These behaviours are commonly seen in shelter animals, most likely due to insecurities caused by a poor environment. Resource guarding is a concern since it can lead to aggression, but research has found that aggression over guarding can be contained by teaching the dog to drop the item they are guarding. go here for more