Who's the mad one..!

the retired sheep dog on the neighbouring property is in love with the senile old staffy, which we own.
today was visiting day, he slowly walks over, old man style ( very slowly - he has arthritis ) deaf and partially blind. it is amazing he can find his way here…!
eventually he arrives, i spend the next hour, opening different gates, doors for them as they wander around , each forgetting the other is there…!
while i was doing this i wondered who was the mad one, the two senile old dogs or the sz opening all the gates and doors…!
take care