Dogs can behave really strange sometimes. It does not matter how much we reap our mind to understand why they do the things they do, we can not find any logic explanation behind it. It seems like dog brain can be as complex and inexplicable as the humans brain at certain occasions.
There is no way that you have not experienced one of the awkward things mentioned below that dogs do with no reason why.
#1 The times when they sit right on your feed in the most inadequate moments ever.