recommendation for all large farm animals - breakaway halters with name tags that identify them, where they're kept, your information, and any specifics to each animal. having just a phone number on them is okay if the phone lines don't go down. i have laminated tags for each of my horses' halters that describe them, any medical problems and how to treat them if need be, my home location and phone number. that way if the phone lines go down and so do my fences, my neighbors at least know where they horses need to come back to. and if i'm not there for whatever reason, they know how to treat any problems a horse might have.
just a suggestion.
everyone make sure you have plenty of dog food/cat food/horse feed/pig feed/goat feed/etc.