Holly received her PhD from UC Davis and was a postdoctoral scholar at UC Berkeley. AnimalBiome, an animal health company that provides microbiome assessments and restorative supplements to improve the health of cats and dogs, grew out of a citizen science research project called KittyBiome that she started at UC Davis on the microbiome of pet cats. This work revealed that imbalances in the gut microbiome are common in pets and highlighted a pressing need for better approaches to restore and maintain gut health.