IT'S A COW

Mind if I asked what settings were used, and focal length?

There is a good bit of color noise and I'm wondering if you were able to get more light onto the sensor. Sometimes you just can't in really dim environments and still want shutter speed.

Easily fixable though, in lightroom (or other software) there is an slider for "color noise", just bump that a few notches (don't over do it though).