Heart Disease: Heart disease affects these dogs in several forms, with aortic stenosis being most common. Aortic stenosis is a congenital heart defect, meaning it's something the dog is born with. It's an abnormal narrowing of the connection between the left ventricle and the aorta. Some dogs don't have any signs or only minor signs, while others may have little energy or even die suddenly. If your veterinarian hears a heart murmur, a chest x-ray and electrocardiogram can confirm the diagnosis.
By looking at descriptions and images of different terrier breeds, you may get a better idea at what the genetic makeup is of your dog. If you are really curious about the heritage of your terrier mix breeds and have the means to do so, there are a variety of interesting genetic testing options available to dig further in their DNA. But just by browsing through the breeds, you may find yourself looking at a canine face that is a little familiar.
As for eating, well, Beagles will try to eat anything. They are professional food thieves, and they will eat anything that even looks like it might be food, including things that you wouldn’t imagine would interest them. If nothing else, living with a Beagle will teach you, your spouse and your kids not to leave food of any kind within a Beagle’s nose range.