Is there any difference between animal and human consciousness? Do humans just have better brains to process the information, and contemplate on their situation? Or is there a ‘physical’ difference in the consciousness of animals?

If there is a difference, what animal comes lowest on the consciousness scale?
@Ardi Pithecus: ‘There is a vast difference between animal and human consciousness. It cannot, however, be “physical” because consciousness is not physical, only the mechanics behind the phenomenon are physical.’

Isn’t consciousness a physical phenomenon?

I thought that was the latest standpoint on the subject.

It seems most of the answers are regarding cognitive function, where there is an obvious difference.