We have coyotes in our area. They are not intimidated by people AT ALL. There was a lady who was in a big, busy park here and had her Yorkie snatched right in front of her. My girls potty indoors, and are in a stroller outdoors. I will let them down on the ground ON LEASH in open areas where I can see what is approaching or around us. There was even a coyote that went up to a toddler in my neighbourhood (whom was sitting playing in the snow) and took a few bites out of her arm/chest before the parents heard the girl screaming.
I am attaching a photo (and the
LINK to the story) that a photographer got of that ladies Yorkie being snatched by the coyote. The Coyote DID catch this Yorkie and it was never found
You can't be too careful. If I were you, i'd either build an outdoor caged area with a roof, or have them potty indoors. I would never allow them more than a few feet away from you ON LEASH.