Of course not! The accusative form is for other cases, not for the verb to be. Please be more cautelous.
No one suffers/is the object of the action of "sleep", so no accusative would be used for this. Also there's no "to be" ("sagon") in this sentence in HV (remember that "sleeps" and "is sleeping" is the same (one verb, "edragon").
You got it backwards, it's "kesy" for inanimate and "bisy" for animate. But kesy can be used for animals too, depends on whether or not each speaker considers them "worthy of it".