Do not tame inside of spike fences or you will lose your precious tame and your life, as I found out. Simply place some carrots in the last item of your hot bar, feed it one and hop on right after. Have fun traveling where it wants.
I have yet to tame a unicorn and I really would like a better understanding of how to get on the unicorn for mobile. for example how to get rockcarrots, and how to mount the unicorn? I have the unicorn in a pen but I dont know how to tame