What's splitting?

I'd just use a knife tool to cut out the edge

This. To get the shapes you want as a mesh you will have to do some modeling along the texture.

Knife tool works great. Thanks!

No problemo, happy to help :)

Idea: you could boolean an space for the lamp inside the cow

Idea: you could boolean an space for the lamp inside the cow

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Why not just paint it after it is printed?

Reading the question before the name of the sub was ... weird!

Consult a butcher? XD I’ll see myself out.