In England, a man who is upset about the amount of dog feces on his lawn supposedly collected hair samples from neighborhood dogs and compared their DNA types with that of the feces, thereby identifying the offending dog (and the negligent owner). It this possible?

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This is possible through a process called dog DNA testing, which is used to identify the breed and identify individual dogs. The process involves collecting a sample of dog saliva or cheek cells, and comparing it to a database of known dog DNA types. While it may not be a common practice, it is not impossible.

In England, a Man Who Is Upset About the Amount