Patrick Mahomes' wife, Brittany, has found herself in the crosshairs of animal rights activists this week ... after she went on a vacation playdate with a dolphin.
Brittany had the meetup with the marine mammal several days ago while out in Hawaii with the Kansas City Chiefs quarterback ... but after she posted photos of the swim on her Instagram on Monday, fans went on the attack.
Dozens have left comments on the NFL star's wife's social media page ... ripping her for the outing -- and calling it cruel to the dolphin. PETA later jumped in, too.
"We know you love companion animals," the activist org. wrote in a lengthy note on Brittany's page, "but we hope to see you extend your compassion to marine life too."
In her photos, Brittany can be seen hugging, petting and even kissing the dolphin. At one point during her swim with the animal, she brought her 2-year-old into the water to get close to the sea creature as well.
In its note, PETA told Brittany none of it was healthy for the dolphin ... adding, "These types of interactions are dangerous for them AND us."
Brittany clearly didn't seem to believe she did anything wrong ... she captioned her pictures with "Ever snuggled a 400lbs dolphin?" She added a heart-eyed emoji as well.
She hasn't addressed the swim and its backlash publicly further.