How do you tell if your llama is pregnant? Search for two heart rhythms.
How do you tell if your guinea fowl has ingested foxglove (digitalis) leaves? Look for bradycardia .
How can you get an EKG device that works in the barnyard?
There's an app for that!
The AliveCor Veterinary Heart Monitor iPhone case and application provides a comprehensive EKG device that can be used on any animal. It's not FDA approved for humans, but certainly could work on them.
An EKG in your iPhone - that's cool!