Natoli alerted that the strange clump was “actually a praying mantis egg sac.” According to her claims, the insects like to lay their eggs in Christmas trees, which are generally firs ...

As one family discovered, small walnut-like growths sometimes found on Christmas trees are not part of the tree itself, but are "oothecas" potentially harboring hundreds of praying mantis eggs.

These critters get their name from their kaleidoscope shell—like a peacock’s tail—and their hinged forearms which resemble that of a praying ... more eggs. Like other reef species, mantis ...

In one case in point, South Korean engineers have developed a soft robot capable of quick, powerful joint movements by employing the same mechanism that powers a mantis shrimp's powerful punch.

Like a praying mantis, the mantis shrimp use a specialised ... the food while the female puts her efforts into raising their eggs. However, the arrangement is not fool proof ...