One of my dogs drinks from the bucket with the water from water changes. I don't usually leave it there, but occasionally forget for a few hours to dump it, and he's good at sneaking it when my backs turned. There are detritus worms in my aquariums, not an insane amount, but there regardless. Can these worms hurt him? This has been going on for a few months, so I'm not worried about him getting an upset stomach, instead I'm worried about these worms living inside him.
