"And we know that in all things God works for the good of those who love him, who have been called according to his purpose." Romans 8:28
How do You know your spirit animal, I have always thought mine to be a wolf, as I love to hunt, but these days not so much hunting, so I am not sure, once I had a gray cat looking at me in a dream, it was in a glass cage, maybe asking me to free it, I am not sure.
no facts here, just opinion. i think all animals are our spirit animals and each has its own energy to bring to the one it visits. they bring messages, protection - both physical and spiritual (cats are spiritual protectors - dogs more physical). even critters like spiders - if one visits you in a dream, it's showing you how to get yourself out of some kind of mess:) (untangling the web you wove:). i used to dream so deeply every night, all night, i couldn't wait to go to sleep to see what i was gonna dream!! felt like i traveled many universes as such, and most of the time there were animals, dif ones most of the time. so i don't think we're limited to one spirit animal. in reverse, if there is a need in your life, you can call on the energy of a particular animal to share it's gifts with you, and they do so if you pay attention