Collie eye anomaly heads the breed's condition list and it is exactly what it sounds like: an inherited developmental abnormality of the eye, ranging from mild and stable to causing retinal detachment and blindness. It is present from birth, so puppies can and should be examined by an ophthalmologist at six to eight weeks. Ask to see those results.
Progressive retinal atrophy also appears in the breed, and both Collie eye anomaly and PRA have DNA tests available.
The second test is MDR1. Many herding-breed dogs carry a mutation affecting a protein that keeps certain drugs out of the brain, and affected dogs can react severely to normal doses of some common medications, including particular wormers and sedatives. The test is cheap, done once, and the result belongs on your vet's file permanently. This is the single most useful piece of paperwork a Collie owner can hold.
The rest of the Collie's list is hip dysplasia, epilepsy, bloat, perianal fistula, thyroid disease and cancer.
The Akita's is autoimmune disorders, hypothyroidism, progressive retinal atrophy, hip dysplasia and bloat — and both breeds are deep-chested enough that gastric dilatation-volvulus is a real emergency risk in each.