Hydrants are targets for many things
HD - if you are the hydrant, it isn't being run over that would be the most common concern around the kennel crowd - at least I wouldn't think so.
Peter, if you have a legit post - do a search on CKC and you will find lots of options. There are good clubs out Sooke way for sure - likely some closer to town too. (Don't laugh guys - used to be majorly into dogs)