My mama cat, showed me how pets perceived the things unseen in relation to how I felt so that I could better recognise stuff. It happened close to 7/8 years ago but it helped me to discern when I felt a move of the Holy Spirit and when something else was around (attached to people visiting the house or outside etc). On times when I had been prayed over or times when I am deep in prayer to where I am overcome in His presence, she would be winding in and out of my arms purring like I was catnip.
There was also a time when I felt so at peace after praying and it was as though she kept happily watching something over my head, following it with her eyes, until I guess it disappeared (as my feeling of peace subsided) and then she suddenly stared straight at me before jumping off my lap.
Then on the occasions when my ex was still in the house and he use to pray to allah, she was so profoundly hostile, staring at something unseen, silently but with her fur slightly raised and crouched down, ears back. But when she had moments like that, I would feel a great sense of unease within me to where I would pray and command whatever it was to leave. It helped me to recognise that in terms of when I'd be out at work now and would come across a situation so that I could pray into it.