Had this been nearly any other circumstance, he would have been fascinated and would draw comparisons between it and the other advances in perception he had experienced from other blood types. The strange things he saw from unicorns, as well as super heightened sense of sight, hearing, and smell to an insane degree. The night vision and processing ability thestrals gave him, allowing him to think and react much faster, as well as make sense of the tremendous amounts of information he took in. The changelings had given him the ability to sense people's locations and even their state of ease and distress from a distance, without even looking. On some level, he was pretty sure it wasn’t the same as their ability to sense emotions, but he wouldn’t be able to know for sure with just one bite. With the ability earth pony blood gave him, it would have made a fascinating combination of abilities.