The Dog Equation( sin(x)*x+cos(y)*y=2)

This is the first equation where it shapes like a dog shape.

https://twitter.com/blender5528/status/1200676789229502464/photo/1 this is the first tweet of this picture i posted in twitter made in desmos graphing calculator.

https://www.shadertoy.com/view/wty3DD this is done in glsl(shader programming) uses same equation to make the dog shape