So much has been discovered these past few years, that anything is possible.
3 seconds sound clip from the Invasion of the Body Snatchers (1956) movie soundboard.
You can hear this line at 00:43:12.005 in the Blu-ray version of the movie.
Quote context
[...]
- Well, what are you gonna do?
- I hope whatever's taking place is confined to Santa Mira.
- Can you make them believe you?
- So much has been discovered these past few years, that anything is possible.
- Why should they take the form of people, of us?
- All that body in your cellar needed was a mind, and it was...
- And it was taking mine while I was asleep.
- I could take that pitchfork myself.
[...]