Ok, so this is a bit of an odd one but maybe someone will be able to shed some light... The Pickles are both serious scent markers, Branston especially spends a great proportion of his walk reading and leaving pee-mails! Everything he sniffs gets pee'd on. However today we were walking in the forest and we were clearly walking down a path that had recently been walked by another dog as there were several visible pee-mails on the tree stumps and shrubs. Branston sniffed every single one of them but didn't pee on any of them. This is totally unheard of for him and I just wondered whether there was any particular reason why he didn't feel the need to scent mark over the top of this particular dogs scent. Any ideas?