Even if a female dog is fixed, if she is on her period, there won't be blood, but she will still give off the nasty smell and that could possibly attract the males, yes. Sometimes though, a male dog (or MAYBE, female) just gets overexcited and, well, you know the rest :D
Dogs leave their scent so that other dogs don't come into their area. They do this to protect themselves and their owners.
sleeping gass :) by emilylaarr and hannahlaarr
Yes, dogs have scent glands in their paw pads. These glands release a unique scent that helps dogs mark territory and communicate with other dogs. The scent is often left behind when dogs scratch the ground, which is a common behavior for them.
Their scent.
Yes, dogs can find water by scent.
Yes, dogs have such a good sense of smell, they can even tell what gender, what age, what breed, if it is healthy, and if it is happy.
It's the same with dogs, they want to know each other's scent. If they know their scent, they won't be afraid of each other.
Dogs lick pee to gather information about other animals, mark their territory, or communicate with other dogs through scent.
The scent is from bacteria growing on the feet of dogs
The skin around a dogs nose is thinner than the skin around a persons nose. The scent can go into the dogs nose so that they can understand what they are smelling just like a human can, but the scent can also go through the thin skin around their nose so that they can have two times as much of the scent in their nose which makes it easier for them to identify scents that are so similar or so faint that the human nose cant detect it.
Yes, they can, one is trying to cover up the scent of the other dog. If you ever noticed that a male dog will sniff around before he raises his leg, and he is looking for the scent of other dogs in the area. It is the way that male dogs can smell the scent of a female dog, up to a mile away, and males will do whatever they can to get away and get to that female in heat.
Dogs may engage in licking pee as a way to gather information about other dogs, mark their territory, or communicate with other animals through scent.