No, they could be gods or spirits. Or even demons.

[Diluc says as he internally notes the glimpse of a metal cat while following Lance towards the barn.]

Or illusions by an Abyss Mage. They like to lure others into an ambush or an asssault. But if you challenge their magic directly they are often thrown off guard. [He lightly pats the horse’s shoulder and takes his gloves off. He stuffs them into his pocket.]