Happy Thanksgiving, U.S. readers. Photo by Bemzilla.

• This week at Nothing in Biology Makes Sense! Fruit flies prefer mates with the same gut bacteria.
• Worst pets ever? An online ant supplier provides invasive pests.
• Powers combined. The fungus killing frogs worldwide may have originated as a hybrid between non-lethal species.
• The developmental regulatory systems that determine biological sex before birth don’t stop after birth.
• Planning ahead. The U.S. Defense Department’s research arm is thinking about life after antibiotics.
• Hell, yes. Should pepper spray be subjected to clinical trial?
• Maybe. Can a genetic marker predict your impulsivity?

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