This is Maverick the Papillon. He was a very sick puppy but nobody knew why. Maverick had an MRI which then led to a laparotomy. It was discovered that he had a condition called Micro Vascular Dysplasia. But Maverick doesn't let this stop him from doing anything - including jumping out of windows. He's a very clever, delightful boy. He now has medication twice a day for his liver condition but he's still a happy chappy.