I generally try to shoot animals at or below eye level to help make the image more personal. (It works with people, too).
But sometimes you get a chance to shoot straight down on your subject. Since you can’t see the eyes when shooting straight down from above, you need to make sure you have very strong graphic lines.
In Costa Rica, there is a bridge on the Tarcoles River that runs straight over a muddy beach where the local crocodiles just love to hang out and catch some rays. I really like the croc prints in the mud, but all but one were well-trampled. Fortunately it was near my croc’s snoot.
Canon 1DX. 330mm. ISO 1600. 1/200 sec. @ f/11. EV +1/3.