A healthy dog died suddenly on Saturday evening. On that day, Mom and dad played and run with Cookie (the dog) in the morning. Everything was great.
It started when Cookie vomit. He vomited a big amount. Then Cookie did not want to ran as much. Parents and Cookie went home for lunch. Cookie did not eat anything after the vomiting. Parents did not suspect anything. Cookie did not complain at all. The dad touched Cookie’s nose and realized something was wrong. They took Cookie to ER, but too late.
Cookie died about 10 hours after the vomiting.
The parents think Cookie ate something at the park and got poisoned. Possible nerve system damage, heart failure, or other organ damages. No headache, diarrhea, heart attack, anxiety, impatience or struggle. His physical strength, heart rate, breathing rate got weaker and weaker. Did not respond to revitalization procedures. Cookie died peacefully.
Cookie and his parents are from China.
The question: Exactly what type of poison? What is the name of the compound?
Any hint will be greatly appreciated!