Imagine your dog's blood having too much fat in it, like having too many cookies in your tummy!
This can make their eyes look funny, give them tummy aches, or even make them feel dizzy.
Sometimes, it's just because they have a yummy food, but other times it's because they're not feeling well.
To help them, we can give them special food, make sure they exercise more, and help them get better if they're sick.