Do All Mammals Get Goosebumps?

💡 The Answer

• The biological process that causes goosebumps is called piloerection and occurs in all mammals.
• It happens when tiny muscles at the base of each hair contract, causing the hair to stand up.
• In animals with thick fur, this process traps a layer of air to provide essential insulation.
• Humans still experience this vestigial reflex even though we no longer have enough fur for warmth.