Join Date: May 2016
Location: Naples, Florida
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Photo Submissions 30 Times in 28 Posts
My guess would be centered around what is an inherent characteristic in canines: A pack mentality. Your pup got used to being "back" with a "pack" which included another dog......(constant attention when desired). Also, Mocha has no way of knowing when you "disappear" for so long, if you are EVER coming back. About the time he adjusts to the new pack, he's back again with your pack. It's easier to understand your dog, if you remind yourself that he has no way of understanding (especially without a track record) why things are changing in his short life. If you do this frequently, (travel, come home, travel come home), then he will learn that this is what normal life is and he will adjust especially as he gets older and learns he will never be abandoned by you.
Just teaching a Havanese not to fear being left is usually a process. Go out the door, wait a few seconds, come back in. Go out the door wait a minute. Come back in. And so on until you can leave for an hour, then two, etc. Some Hav's adjust better than others.
When I was a kid, my parents took a few long trips (a month or more at a time). The caregivers who stayed with my sisters and me, would always make things fun and entertaining. I missed my parents, but boy did we do a lot while they were gone! Parents came home, and no more trips to the bowling alley every day. Another adjustment in life. LOL