HELP! Is it possible to replace just part of the fur on a head?

So I've managed to make a mess of the fur on part of a head and I mean there is absolutely no saving it, sooooo is it possible to replace just part of the fur on a head? Like if I decided to just replace the fur that is just the color of one marking?

If there is a tutorial for this that exists or a way to explain how to do this I would homg appreciate it so much.

Thanks!

EDIT:

Basically what happened was after shaving the fur down to the acceptable level I found out the green foam I had used for the head showed through the white fur O_o. I thought oooooh lovely.

This is how much white is on the head:

Nose and "eye liner" are not attached in this picture

I thought I could just peel the fur back and maybe put white fabric over the green foam to cover it so that it wouldn't show through but when I discovered how hard the glue had gotten in the places even gently pulling the fur it was tearing and then I actually did try the idea of blow drying it and even blow drying it through the backing and doing it carefully it ruined the fur and now the fur looks like this:




Also I would never recommend using a blow dryer to anyone else. But that is just me personally. It not only ruins the fur even through the backing because it seriously takes a lot of heat to loosen up some areas and also guess what the head is held together with? Hot glue.....so I may have to touch up a couple areas on the mouth of the actual base now where it changed the expression to a more open mouth excited expression instead of shy >_<.