Yes, fer God's sake, non-human animals are conscious. We just have difficulty imagining what the conscious experience of an ant, a frog or a dog is like.
I find the persistence of the idea that consciousness is somehow an effect of something happening in brains to be quite interesting and highly informative. Nothing unique is happening in brains. If consciousness were an effect of something happening in brains, such as an effect of electrical activity, there is no reason why consciousness wouldn't be an effect of electrical activity outside of brains. And if one assumes that consciousness is an effect of electrical activity in brains, it would seem to imply that consciousness is just an inherent aspect of electromagnetic fields. Indeed, to the best of my understanding, it seems that the current evidence suggests that general anesthetics produce unconsciousness by disrupting the coherence of spatially extended EM fields. E.g.:
According to the theory of Tononi, consciousness emerges from the dynamic interaction of large-scale networks of the brain that function to integrate information (Tononi,
2004,
2005,
2008). These functional networks may bind information from endogenous and exogenous sources and make the computational result globally accessible across the brain (Baars,
2005). Anesthesia may suppress consciousness by disrupting (Alkire et al.,
2008; Hudetz,
2006) or unbinding (Mashour,
2005) this integrative process.
General Anesthesia and Human Brain Connectivity
On a recent broadcast of Radio Lab on NPR, a woman described her experience of having a stroke, in which she said she experienced "joy, pure joy." She said that as she slowly recovered her brain functioning and became more aware of her environment, this unadulterated joy gradually subsided.
I am reminded of the delightful comedy Soap Dish, starring Sally Fields and Kevin Kline, in which the neurosurgeon was slightly reluctant to perform an impromptu brain transplant between the soap star (Fields) and her daughter, with a hack saw on top of a bar counter, in order to save the daughter's life. The surgeon explained, "But if I do this, you're going to lose your brain forever," with Fields urging him to hurry up and do it, saying, "I don't
need a brain!" That's what I say. I think I'd be better off without a brain. I never use it. It's just eating up and dispersing energy.