Have a dog who’s prone to high cholesterol and triglycerides, like a schnauzer, collie, or Shetland sheepdog? Eating avocados can also help lower triglyceride levels.Avocados are rich in vitamins and minerals including vitamins C and E, folate, fiber, healthy fats for brain function, phytosterols for heart function, and-pound for pound -contain more potassium than bananas.