TOP 15 ANIMAL NESTS – Incredible Animal Nests Interesting! Many animals build homes for themselves to live in, places that provide warmth and protection from the outside world. While many tend to make relatively simple structures, or simply take advantage of the natural holes, cracks, and crevices that have formed in the landscape… others take a much more methodical and complex approach to create something absolutely unbelievable. It’s time to take a look at 15 next level animal nests.