Bias, facts and statistics
Like it or not, all AI will be based on statistics and things people know.
Suppose the situation where one has to share a hotel room with either a rabbit or a lion.
Any sensible AI system aiding in deciding which room would offer the best experience would probably recommend a room with a rabbit as roommate.
Since the AI system would base its decision on information like "lions are large carnivorous predators with large teeth", thus the fluffy bunny is probably preferable above the lion.
Is it interesting to see wether this is considered to be biased information.