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					Originally Posted by  Nancy1999     I disagree with idea it a training issue, training has only minimal results when it comes to marking.  Training works with housebreaking and peeing, but marking is different.  Marking is considered "wired in behavior", and while you can modify it a little, you can't do much.  It's a little like sneezing, you get the urge and it's very hard to stop, sometimes you have no control.   Punishment is not effective when it comes to marking behavior; dogs have suffered from extreme electric shock, and still will continue to mark. I think people with only one dog have a much better chance that their unneutered dog will never mark, it's the smells from other dogs that sets off the marking in many cases.  So don't be surprised if your Lab starts marking when a new dog is introduced.   |  
 
  Good to know... very good to know. I have heard my husband tell relatives, to walk/relieve their pets outside of our property, because "Charlie would go nuts trying to right all the wrongs". Marking, I get it. Charlie doesn't go on any of our trees/grass or landscaping, he has his gravel/sand area, that is his only spot. Bubba already has a separate gravel area along the side of the house and we may always keep them separate. We have walked Bubba over to Charlie's area, he doesn't sniff or try to potty, but he may still be too young to exhibit marking behavior. I haven't tried the opposite, Charlie in Bubba's area. But I am curious if Charlie would want to mark. 
I have thought neuter Bubba leave Charlie intact, neuter both, leave both intact. Arrrrghhh, I really just want two predictable animals, I think neutering is the surest bet for this.