Why does Sirius twinkle?

Astro Bob: A Sirius look at twinkling stars - Duluth News Tribune

Simply Scintillating

Blinking Sirius

Sirius, The Brightest Star in the Sky

night sky - What is this rapidly twinkling red, blue, and white

Why do some stars twinkle

See Sirius, the brightest star in the night sky

This Photo Captures Every Color In A Single Twinkling Star

Sirius: The brightest star in Earth's night sky

Why Do Stars Twinkle at Night?

Sirius twinkling in colors

Why Does Sirius Twinkle? - Universe Today