What does an animal's external structure tell us about where it might live or eat?

An animal's external structure tells us about where it might live or eat by showing different skin/fur/scale/feather colors.

Step-by-step explanation:

This is the biggest give away for where they might live because they're skin/fur/scales/feathers will most likely blend in with their environment (camouflage) in order for them to survive. It can also tell us if it is a shady or light environment, because sunlight can change skin/fur pigment.

This is the biggest give away for what they might ear because some animals skin/fur/scales/feathers turn different colors depending on what they eat. Flamingos, for example, are pink because they eat shrimp.

Hope this answers your question!