I agree with what was posted above. I DO think dogs just don't like certain dogs and as long as you are socializing him and this is only a one time thing, then I wouldn't worry too much about. I also wouldn't let it escalate though because it may potentially turn into other dogs too. Your friends Yorkie may have been putting off bad vibes that only doggie language can understand.
How old is Denali? Is he neutered? Maybe your friends Yorkie was not neutered.... intact males will often fight. Also, Yorkies are also terriers, who are often known for same-sex aggression, although it seems to me you don't see that as much in Yorkies as you do in other terrier breeds.
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All you can do is to expose him to as many experiences, places, people and animals as possible.  |
Totally agree with this! And to me, it sounds like Denali is pretty socialiable most of the time, so I wouldn't worry about it.
I can honestly say that Jackson at 2 years old has never met a dog he didn't like. I've only heard him growl once and it was an obnoxious boisterous Lab puppy (who was 65+lbs) who knocked us BOTH over. Also, I was holding him when this happened. Oh, there was one other time we were dogsitting a Rottie puppy who is 70lbs and although they are friends and raised together, the Rottie was being way too hyper and I DID pick Jackson up and he started growling in my arms, I couldn't believe, never heard him do that before EVER.... I find that picking him up makes him anxious and makes situations worse. Were you holding Denali when he was growling? I typically don't pick Jackson up.