This video from Tennessee in the USA says about itself:
8 October 2017
Mother Red Squirrel‘s warning call is amazing! A tiny Red Squirrel kitten is sitting right in the middle of the trail to Mt Leconte in the Great Smoky Mountains. Way too young to be out and about by itself and mother squirrel is extremely upset and concerned giving the most emphatic warning call I’ve ever heard – and I’ve heard a lot.
Just about any other four-legged creature or bird could have this little one for breakfast. Squirrel kittens are so trusting and accepting of strangers – remember just because you find one alone does not mean mother is not around or coming back. Of course in the wild like a National Park you never handle an animal, but in your backyard or a local park wait an hour or two before you remove a seemingly abandoned baby squirrel to a shelter. Mom may be hiding and waiting for you to leave.