A heterotroph is an organism that does not produce it’s own food (they cannot fix carbon). Plants, on the other hand, are autotrophs and can produce their own food through photosynthesis. All animals and fungi are heterotrophic. This lizard must find food if it wants to survive. Heterotrophs can die from lack of food. Chemoorganoheterotrophs get their energy from reduced carbon compounds (carbohydrates, fats, proteins) which can be found in plants and animals. This is why eating a plant that has already fixed carbon molecules into proteins, carbohydrates, etc. can be beneficial to the consumer.