After seeing multipule failures, and a bunch of clerics wasting so much supplies and doing more than they need to, i figured i'd share the most efficient way to cleric hound.
When the tank goes in, you don't need 3 clerics healing him all at the same time. That is over healing and wasting scrolls. 1-2 is fine. Your cleric should beable to heal for 400+ (15+ lvl's) That means unless it is a fully raged WF barb with macho HP, you will top the tank off with a single heal. If you can't, you might be doing something wrong. I see clerics throwing scrolls/heals when the tank has 90-95% health!!! That is unneeded, throw a scroll if he is at 50%, Or, if it is a barb, you can throw a heal when he is at ~10-20%. That is getting the most effiecncy out of your heals.
When the dogs get charmed, don't start throwing mass heals. Again, if a dog is at 25%, you can top it off, wait til it is low, then throw a heal. It is more effecient than spamming mass heals, why? Mostly only 1 or 2 dogs take damage. Usually the one in the middle is the only one, the side dogs will take damage with Horrid Withing but thats it. It will be so much more effient that way.
I've soloed cleric this, and ive even seen someone solo cleric it on hard. You don't have to have an uber cleric to do it, you just need to have commen sense and know how to play. Even if your the only cleric, letting dogs die is unacceptable. (Unless beholders/reders are up and everyone is dying.. but thats usually a fail anyway)