Jiminy Cricket may not actually hold the door open for his lady friends, but he can still be : researchers from the University of Exeter discovered that when by predators, a male field cricket will protect his mate by letting her enter their burrow first. The work is published in the journal Current Biology. Using microphones and infrared cameras, researchers monitored a Spanish cricket population for three seasons. They identified each cricket with a tiny numbered name tag and a DNA fingerprint taken from a sample of its leg. This Big Brother scrutiny revealed the details of cricket relationships, from their courtship time to how they conducted their affairs.