Did your mother's dog have reflective eyeballs? If so, that's called a Tapetum Lucidum[0], and most dogs breeds have it. It's what make animals' eyes appear to

Did your mother's dog have reflective eyeballs? If so, that's called a Tapetum Lucidum[0], and most dogs breeds have it. It's what make animals' eyes appear to glow in the dark. Light reflects off the back of the eye so the retina can absorb more of it, allowing for improved vision at night. [0]https://en.wikipedia.org/wiki/Tapetum_lucidum https://en.wikipedia.org/wiki/Tapetum_lucidum