Martha broke the news Sunday … revealing Princess Peony died in a case of mistaken identity. Her social media caption read, “Burying the beautiful and unusual Princess Peony. the four dogs mistook her for an interloper and killed her defenseless little self. I will miss her very badly. RIP beauty”
She later posted a pic of PP in remembrance … Martha says her feline pal was a dominant calico Persian who celebrated her 12th birthday last year.

Still, gotta wonder how her pups mistook a not-so-large house cat — with which they’d lived for several years — for a human intruder. ?