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Dogs bark at people because in many cases, they are not accustomed to being around strangers other than their families. Dogs also have keen observation skills, meaning that they can read human body language well enough to sense suspicion or threat based on a person’s actions and bark in response.
One of the most common reasons your dog tilts its head is to see better. Expert study analyzed how the snout of your furry friends can hinder depth perception which is why your four-legged furry friends tilt their heads. Your dog may also tilt its head as a sign of empathy or in order to hear better.
Yes, thanks to their super sharp sense of smell, there are specially trained dogs that are capable of sniffing out and detecting the presence of cancerous cells in humans. These dogs often react by constantly sniffing at parts of the body potentially affected by the cancer.