Things that go Bump in the night

What is that noise I hear at night,
The one that gives me such a fright,
And stops when I switch on the light,
That is so bright, that is so bright.

I do no recognize the sound,
Is it an echo from Earth’s mound,
Did I hear something hit the ground,
What have you found, what have you found?

Do you think that it is a rat,
Or could it be a huge gray bat,
I know that it is not a gnat,
Is it the cat, is it the cat?

Line count: 12
Form: Monotetra has 4-line stanzas, with no stanza limit. The poem must have at least 2 stanzas. Each stanza has its own mono rhyme scheme. Each line has 8 syllables, with the last line repeating 4 syllables.