While recently creating a Packlord type character build, I stumbled upon this the Totem Beast feat. It doesn't explicitly state that it can be taken multiple times, but it also seems to assume the character in question will only have one animal companion, where a packlord type can have multiple. The Boon Companion feat reflects that well, and lets you take it one time per companion.
Would it be legal to take Totem Beast several times, as long as it applied to a different companion each time?
A related question, which doesn't address the multiple companions issue: How does the Pathfinder Druid's Totem Beast feat work?