Article: A breed apart; ZZ is a mix; a DNA test may dissect his genetic lineage.(Life-Discovery)

Byline: MICHAEL JANAIRO - Staff Writer

ZZ is a mystery dog.

When he was adopted in 1990 from the Blackhawk Humane Society in Waterloo, Iowa, ZZ a nickname for Zeke Zlotsky was 6 months old and housebroken. But his lineage, his early upbringing and why he was given up are all unknown.

In her first few months with him, Deborah Zlotsky, ZZ's "mom," says he often chewed up the trash and gnawed on furniture, but he was also affectionate, playful and trusting at least with her. He's small, only about 10 pounds, so with people (but not dogs) he can be suspicious and reticent.

I first met ZZ when he was about 9 years old, and I was ...

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