For every one of our Human years, Dog's apparently have seven 'dog' years; I was wondering if there is actually any scientific basis behind this or if it is just an urban myth??

Why do dogs hate being blown in the face, but yet enjoy sticking there head out of the car windows.....

Since we have such different faces and body structures compared to dogs, how can they instinctively tell that the two spots on the upper portion of our faces are in fact our eyes, and not, for example, our nostrils?

The obvious answer is that they are afraid of loud noises etc. but I want to know if there is some other reason. For example, cats don't seem to be afraid. Have dogs evolved to fear thunderstorms for some reason? Or is some other phenomenon associated with thunderstorms, the change in air pressure for instance, affecting them?

I've noticed, like many others, that dogs hate bicycles and tend to bark or attack them and their riders.

From my observation it's not as simple as it first appears; sometimes I've noticed that dogs simply don't register a bike approaching them, and are then really surprised when nudged with the front wheel even though they've  seen it coming and presumably smelled the rider approaching too, and the rider was shouting and ringing a bell. In these cases, though, stamping a foot down works wonders.

It seems to be all about footfalls/vibration being the key factor that most dogs pay attention to. They see a person apparently gliding along without any obvious footfalls and it either freaks them out, or they completely ignore it and don't perceive it as a large object approaching.

My question is "why should this be?" What possible evolutionary reason is there for ignoring the sense of sight, smell and hearing in favour of vibrational cues? Is it that chasing prey through sunlit and dark areas renders sight less effective than vibration sense? Is it that in a wild pack of dogs, there's constant noise and confusion so footfalls are the most reliable way of sensing a threat?

What is going on here?

I understand that a dog is not capable of producing the sounds required to converse in a human language. However, would it be possible to develop a language made up of sounds that both a human and a dog could produce so that they may "converse" on some level?