I thought it was a uterus/IUD thing at first 😬

Connect the ears to the head. It looks like horns since the tips don't touch.

Another reason is the ears get thinner towards the bottom, like horns.

And the ears are hollow. Maybe shade the inside slightly to signify its not empty space (the ear cut isn't enough)

I can see a mouse but I bet if the ears were modified to connect at the bottom, it would get rid of the goat that some are seeing. They're seeing horns instead of ears. Maybe make them smaller and shift upwards so they can connect at each end? Currently, they're disproportionately large for a mouse but more suited to an elephant.

I'm sorry, the image appears pixelated.

design the logo without color. add color, if necessary, to the finished logo.

get up and look at your logo from a distance.

turn it upside down and look at it again.

Hmm in addition to other comments here, one thing that comes to mind is proportions. It's a very large cartoon rounded set of ears when compared to a narrowed, elongated skull. So they don't seem like part of the same piece. Ungulates (eg: goats) have quite long narrow skulls for all those molars.

The thumbnail looked like a mouse and nib to me, but as soon as I saw the whole pice then yeah, could see what you mean. I think if you update the ears to a smaller and more realistic 'rounded wedge' shape, OR round up and 'cute-ify' the skull, they'll match each other tonally.

Make the outlines for the ears finer and make the lines parallel instead of tapering. The lines not connecting also doesn't help, but since the lines start so much wider at the top of the head it immediately reads like horns.

Close the ears, make the whiskers bigger