Kal, a 4-year-old Border Collie, had battled intermittent forelimb lameness for months despite treatment. Radiographs offered no answers until MRI revealed the hidden cause in both shoulders.

Ultrasound is a great first step. But sometimes, it only tells part of the story. Learn 20 clear signs your pet may need a CT scan to uncover what’s really going on, so you can make confident, informed decisions about their care.