"This is not a Japanese giant hornet (Vespa mandarinia), but a Vespa ducalis, which comes really close in size. It is not a male, as someone claimed, it's a worker. Note the antennae and abdomen - males have an additional segment and a blunt abdomen, and long curved antennae. Their usual lifespan is merely several weeks, which is why I'm surprised myself. She isn't flying simply because she's busy eating. I caught her intending just to take some photos, but decided to keep her later. This is not in any way related to the cicada killer, it is a close relative of the European hornet Vespa crabro and the previously mentioned Japanese giant hornet. They never attack away from the nest. And yes, I have been stung by this species (but not this individual); it hurts somewhat; swollen hand, stiff fingers, but no lasting effect. She died naturally of old age."

The Japanese Honeybee's Thermal Defense
The Japanese giant hornet, Vespa mandarinia japonica, preys on other species of bees and wasps. When a solitary hunter finds a nest, it marks it with a secretion from its van der Vecht gland. Other hornets in the area congregate to the area, and they begin a mass attack on the colony. While they are efficient at wiping out hives of the introduced European honeybee Apis mellifera (they are killed at rates as high as 40 per minute), the native Japanese honeybee, Apis cerana japonica, has an interesting defense against the predatory hornet! The Japanese honeybees can detect the hornet's secretion, and attack incoming hornets en masse. With approximately 500 honeybees surrounding the hornet in a tight ball, the temperature within the cluster rises to 47º C (117º F), which is above the upper lethal limit range of 44-46 degrees for the hornet. This temperature is too high for the hornet, which quickly expires, but does not harm the honeybees.This temperature does not aversely affect the honeybees because their upper lethal limit is slightly higher, 48-50 degrees

Mais les deux premiers vidéos, c'est totalement stupide....... si je comprend bien, pour faire un simple vidéo, certains zoos semblent laisser deux animaux cr*ssement pas compatibles, forcés d'être dans une cage restreinte, se battre à mort pour savoir lequel est le plus fort. Pitoyable

j'ai pas trop de problemes avec : "Humain stupide se mange ce qu'il merite a avoir ete plus con que la moyenne des dindes" ou "feeding time" mais mettre deux super predateurs dans un ring pis les regarder faire de la sharpie ... bah c plutot indecent ... c koi le prochain video ils vont mettre un hippopotame dans le jell-o avec un anaconda, un lion pis un requin blanc pour juste voir ce qui vas se passer ... sensless and stupid.

p.s. celui des wasp est incroyable.