Let’s admit that just like you have consciousness, you should admit that other men and women, chimps, and other mammals are conscious as well (feminists will surely forgive my ordering of the agents which wasn’t supposed to convey an idea). To claim otherwise really means to deny evolution. Squirrels may have poorer memory and abstract skills, ability to compute and generalize ideas etc., but this inferiority may be classified as “just another technicality”.
When it comes to the truly metaphysical, qualitative aspects of consciousness, squirrels simply have to be analogous to humans because all of us have common ancestors, too (and we’re composed of similar and similarly interconnected cells). To claim that squirrels aren’t conscious means to deny evolution and most of biology, too. There just can’t be a truly metaphysical difference between squirrels and humans.
We shouldn’t stop with squirrels. Biology teaches us that there’s nothing metaphysically different about mammals and there is nothing God-like about our common ancestors (including Jesus Christ if he or He existed, sorry), either. Birds or dinosaurs have to be self-aware, too. They don’t know how to manipulate with the information they are aware of too well but in principle, they must enjoy the analogous spiritual dimensions of consciousness as we do. They really feel well during a nice sunny day, too.