Pineapples are a dog's natural enemy, apparently.
YouTube user Jolene Creighton uploaded a video of her pit bull, Stella, barking at a pineapple she had left on the kitchen counter. After several minutes, Creighton realizes that Stella is barking because she fears the mysterious fruit.
But all's well that ends well, though, as Creighton later uploaded a video of Stella nuzzling the pineapple, after she shows that the the spiny, unidentified object is nonthreatening.