This cant be a new species, simply because we know
all large scale (small would be insects etc) Animal groups.

The only chance to find a totally "new" species might be in
the deep ocean. but then it would be just a strong variation
of some other known animal group.

On ground, we will find at maximum an unkwonw variation from already
known animal families.

So this "Alien" could be at maximum a variation of
a known animaltype.
It has all feaures of a (skinned) moneky. Thus it must be a moneky...

So simple..


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For "Aliens". Even if they exist they cant reach us.
If they would have reached us (in modern times), they would have made a clear contact.
They would also send at a maximum an automated robot/sattelite, not the living alien itself (wich is selfmurder given the
time neeeded for spacetravel)
Everything else is childish "want to beleive" and coverup-theories.