You do not choose a Spirit Guide as your personal spirit guide. The Spirit chooses you and they decide to whom they will reveal themselves and make their friend. Do not fall into the trap of saying, Gosh, I think the wolf is a smart, good looking and powerful animal, so the wolf will become my animal guide. It does not work this way.
Each Animal has its own Medicine which is unique to that specific creature as gifted by the Great Mystery and its spirit cannot be chosen like the color of your new car. Discovering who your animal guides are is a process of paying attention to the spirits around you and following the signs. It is a process of developing your inner knowledge and spiritual understanding.
An individual can not be assigned a spirit guide by another person, regardless of who that person maybe, no more than another person can say how or when the Great Mystery of Life will be known to you.
What happens if you want an animal spirit so bad you can taste it (not literally) and one has not come to you? We have two suggestions for this case. First, pray about it. Second, be satisfied with whatever happens or does not happen. It if comes, then it comes. If it does not, then it does not. End of question
thats the whole thing
Hope it helped :)