He has dominion over some animals. And bats, being creatures of the dark like himself...
5 seconds sound clip from the Scars of Dracula (1970) movie soundboard.
You can hear this line at 01:11:24.549 in the Blu-ray version of the movie.
Quote context
[...]
- Well, he said his master was a monster.
- Anyway, he helped us escape.
- For that, you should be grateful.
- Yes, he was telling the truth, but only part of it.
- His master is indeed, as you rightly said, a monster. He is also a vampire.
- A vampire? Vampires are bats. A bat!
- He has dominion over some animals. And bats, being creatures of the dark like himself...
- Don't vampire bats drink blood?
- They do. Vampire bats drink the blood of animals.
- Now you are beginning to realize what we shall be facing.
- I dreamed, he came to my room. He bent over me. I could feel his breath on my neck.
- Without a doubt. It is one of the things he fears most. The symbol of our Savior.
[...]