The video states that, 'hybrid vigour' makes a liger "bigger, stronger, smarter and faster" than its parents. Judging by his girth, and shorter legs to torso, compared to lion or tiger, I do not see how Hercules could be 'faster'. Though a Wiki article states that he is not obese and is expected to live a long life, his large belly and his panting, even when he walks, does not 'equate' with being in good health.
While lions and tigers can breed in captivity, there are apparently none in the wild as their territories do not overlap and only a very small part of lion and tiger territories ever did. If God had wanted ligers, He would have made them in the wild. Man should not mess with this.
