This is a trailer for a film I remember renting from Jumbo Video many, many years ago.
There are several things I love about this trailer. First, the quote “Alone, a harmless house pet. 1000 strong they become a man eating machine!” Second, that the film management was nice enough to offer free burials for those who dies in their theatre. I'd love to know why caskets are optional on the west coast.
Also, I love that on the movie's Imdb page there is an actress credited as “Woman who shoots doves.” Love it!