I can tell you what we see and that intelligence is simply the result of neuron firing in the brains of living things.
It seems to be quite common in nature and pretty wide spread but all indications are that it is just mechanical and chemical.
And how much of what theory? So far I see no such thing as a Theory of ID since so far no one has presented any evidence that there is any design, designer or intelligent designer or any evidence that such a thing might be needed, worthwhile or interesting.
Anyone so limited that they can only spell a word one way is severely handicapped!