Binx, the shelter dog, is a very good boy.

Too good, in fact, for the people who adopted him a few days ago.

They returned the friendly 1-year-old mutt to the Arizona Animal Welfare League and SPCA in Phoenix in less than 48 hours. In a Facebook post Monday, the shelter said the family included notes saying Binx was "potty trained, good with kids, fun to play with, and good with dogs in the home!"

Well, no wonder they didn't keep him. Who would want a dog like that?

The shelter wrote that the family was looking for a dog that was more of a challenge.

Hopefully they will find a more suitable pooch to shred their sofa cushions, defile their carpets and ignore their commands.

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In the meantime, Binx still needs to be adopted by someone who appreciates a well-behaved dog who likes to run, chase a ball or two and go on walks.

More information about Binx can be found here.

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Read Mike Moffitt's latest stories and send him news tips at mmoffitt@sfchronicle.com.

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