Well at the mo, James is trying to impose his will.
Round one to James on points for a swipe.
Round two went to Boo for returning a hiss and then ignoring.
Not too bad for less than 24 hrs.
James has his bed in the cloakroom where Boo never goes, and Boo is in a chair in a distant corner of the house. They have sniffed lots and lots of times with no reaction so hopefully the spats are just a temporary thing.