If your dog seems unusually tired, uninterested, or slow to respond to you or other environmental stimuli for more than 24 - hours, it's time to call your veterinarian. (dogingtonpost.com)
The reflex occurs when an infant is startled by a loud noise or other environmental stimulus or feels that he or she is falling. (verywellfamily.com)
Both brown and beige fat get their color from increased mitochondria that are added in response to cold and other environmental stimuli, he said. (sciencedaily.com)