Some strange stories here, but the first one can be understood plausibly as examples of either female giant sloths or cubs. They have actually been missing in those dogman reports
Cornfields provide natural cover while looking benign. Step into one and your vision drops to arms length while the row system keeps you from getting lost. It is no trick to hide there. Better yet no one ever patrols them. See vision problem.
The larger creatures could not use them as they make too much top movement, but these certainly could.
[ recall Banshee - arclein ]