Adjidaumo, the velveteen squirrel

American red squirrels, Tamiasciurus hudsonicus, look like russet velveteen plush toys:

But in fact they are very aggressive. They have formidable teeth and claws:

Their feet are interesting too, with thick calloused pads on the palm as well as the fingers:

Sometimes you can see a wounded squirrel like the one below. It had identical wounds on both sides of its muzzle. I do not know if another squirrel did it, or whether it was chased by the fox that is hanging around my garden. The second photo shows the same squirrel, with the wound healed:

The video below shows typical squirrels squabbling over territory and food; as you will hear they are extremely noisy :

In Longfellow's Song of Hiawatha, the squirrel is called Adjidaumo. 
This is an Ojibwa word literally meaning "mouth-foremost", because 
squirrels descend trees head first. Here is a short excerpt from the 
poem:

At the stern sat Hiawatha, 
With his fishing-line of cedar; 
In his plumes the breeze of morning 
Played as in the hemlock branches ; 
On the bows, with tail erected, 
Sat the squirrel, Adjidaumo ; 
In his fur the breeze of morning 
Played as in the prairie grasses. 

....

And the squirrel, Adjidaumo, 
Frisked and chattered very gayly, 
Toiled and tugged with Hiawatha 
Till the labour was completed. 

Then said Hiawatha to him, 
" O my little friend, the squirrel, 
Bravely have you toiled to help me ; 
Take the thanks of Hiawatha, 
And the name which now he gives you ; 
For hereafter and for ever 
...
Boys shall call you Adjidaumo, 
Tail-in-air the boys shall call you !