I fitted a microchip cat flap just to keep the neighbour’s cat out: three weeks later, I understood why mine was weeing behind the sofa

I fitted a microchip cat flap just to keep the neighbour's cat out: three weeks later, I understood why mine was weeing be...

When one cat owner installed a microchip flap to keep out a neighbour’s cat, she uncovered the real reason her own cat had been weeing behind the sofa for months. What started as a food-theft problem revealed a hidden territorial crisis—and a sobering lesson in feline stress.