My daughter’s beautiful 5 year old pitbull died suddenly last night. He was current with shots and vet visits, bloodwork, etc. and had no known health issues. My son in law had played frisbee with him. He did not exhibit any signs of heat exhaustion. Drank a lot of water when he came inside and was fine while my son in law took a shower. He fed him after his shower and he cried out while eating, seized a bit, collapsed and died. Son in law checked for airway obstruction and did several compressions on his chest, but he did not recover. They are heartbroken. How does this happen?