If you are not satisfied with the standard foxes in Minecraft, then you can download the Beautiful Foxes mod, which will not only change their models, but also add more varieties. It does not happen that foxes who live among the snows were all red, and in Minecraft Bedrock Edition.
The author added new textures for animals, in addition to the modified models in MCBE, of course. You can meet:
A red fox
They are tamed in MCPE in the same way as ordinary ones. The author of the mod in this case did not reinvent the wheel. Have a nice game!