Scooting a bottom across the floor is a common dog behavior often indicative of an butt sac issue. butt sacs may become clogged or injured for a variety of reasons, which can lead to scooting.
It can mean a few things i’ve had my dogs scoot across the floor and I found out that they had worms. Round worms I think. However, scooting a bottom across the floor is a common dog behavior often indicative of an A.n.a.l sac issue