Jackals are anything but picky when it comes to eating, but their habits are definitely gross. These scavengers will scarf decomposing or diseased flesh, even if it's been rotting for days. When lions and tigers are done with their kills, jackals will gladly move in for the sloppy seconds. They pass this practice along to their pups, teaching them to not let anything go to waste by putting food on the dinner table via their gag reflex. Yes, jackal parents actually feed their young with their own throw up every few hours to prevent starvation. If the pups get full, no worries — the jackals will just re-eat their regurgitation. You'll never hear the phrase, "Hey ... you gonna finish that?" the same way again.