Can you evidence any animal on the planet with limbs made of metal or stone, or with a face made of electricity?
Great, and since we are specifically talking about creatures not from this planet (that is what the word "angel" normally refers to) your asking for evidence from animals on this planet makes no sense.
I haven't read every piece of the Bible but I'm quite sure no one is mentioned as having a face made of lightening. Instead I have verses talking about the brightness of certain people's faces being like the lightening.
Giants - I'm obviously not talking about larger-than-average humans. There are specific "giants" referenced in the Old Testament - Is there any evidence for their existence anywhere outside of the old testament? Anything at all that has ever been discovered by the countless archaeologists and paleontologists who specialize in these types of discoveries?
Also, what happens to humans once they reach 8 feet tall and higher? Are they super-athletic and able to terrorize entire regions with their warrior abilities, or can they barely walk on their own and suffer from damaged skeletal connections which lead to being one of their causes of their early deaths?
You obviously haven't met the people of Sudan. Certain tribes there are so tall their women alone appear to be at least 6 feet tall.
Secondly, how many bones of people who lived 4000 years ago have archaeologists found? Remember giants were considered abnormal in the days they supposedly lived. Clearly there weren't that many of them even then.
Talking animals - Again, please cite evidence for there being a species of donkey or snake which speak a human language. The Bible doesn't say that the snake moved in a way that was understood to mean something to Eve - the Bible contains dialogue between humans and animals in an impossible manner. There are all kinds of natural laws being broken, including a complete disregard for neuroscience, biology, anatomy, chemistry, history, linguistics, etc... just to name a few.
Actually no natural laws are being broken by animals speaking. Several animals have shown they are completely capable of making sounds that resemble human words. Animals also clearly have thoughts and feelings they like to express. The only problem seems to be getting animals use our language to speak. However scientist have been working on this for a while now. Are you willing to bet against scientists being able crack the code that would allow animals to speak? And if you are not able to bet against them then why do you assume that the angels (discussed) above would be unable to do the same?
You see human not being able to do something doesn't mean it is against natural law. 100 years ago humans couldn't clone animal and cloning was the stuff of fiction or myth. But now it is reality. Have we broken natural laws in order to clone? Of course not: we have simply understood natural laws better and with that understanding came the ability to manipulate it.
Burning bushes that speak audibly - Like snakes and donkeys, bushes don't have a human larynx so...
Bushes also don't have lungs or lips.
Except no one ever said the burning bush spoke. Here is what the scripture very clearly says
And the angel of the Lord appeared unto him in a flame of fire out of the midst of a bush: and he looked, and, behold, the bush burned with fire, and the bush was not consumed.
And when the Lord saw that he turned aside to see, God called unto him out of the midst of the bush, and said, Moses, Moses. And he said, Here am I.
Notice how no mention is made of the bush talking.It is clearly mentioned that God or His angel was in the midst of a fire which came from a bush. It is clearly mentioned that God spoke to Moses and not the bush, the fire nor the burning bush.