I recently learned that using "spirit animal" in this way is disrespectful to indigenous people. In a similar vein, expressions like "lowest person on the totem pole," or "pow wow" to mean meeting, are also anti-indigenous.https://www.vice.com/en_us/article/pa5a3m/how-to-be-an-ally-to-native-americans-indigenous-people …
Now that I know, I don't use these expressions and bring it up to others when I see it... co-workers, friends, and people on Twitter. Although I'm sure you didn't mean disrespect when you posted this, can you now delete? Thank you.