Depending on the amount of kimchi your dog consumes, the health risks could go from mild to severe. That’s because too many variables could trigger an adverse reaction in your dog’s overall health. For example, garlic and onions may damage your pup’s red blood cells resulting in anemia or death if left untreated. The high sodium content in salt can cause your dog’s blood pressure to shoot, leading to seizures, heart murmurs or blindness. The red pepper flakes can result in symptoms like diarrhea, stomach upset, vomiting, bloating, and excessive thirst.