The horse rolls on bits for a long time.
probably dizzyness, passing out, weakness something like that depending on how poisenes the plant is.
they start acting up. they get sick.
Eaten a what exactly?
Well I'm not sure about the new one but I think it will say: [name] has ingested [plant]
The most popular signs are the horse is ether rolling or pawing the ground continuously. If they do this call a vet right away.
your horse would not eat and it will feel weak the best thing is to give it lots of water and give it medical attention to a vet
for howrse: Excessive energy levels, and loss of interest in food. This should be on level four. !!!
Your horse cannot eat a poisonous plant.
When a horse eats a poisonous plant, it may get colic, or a stomachache. The horse may be refusing to eat or drink, be rolling around on the floor (horses roll around anyway, but you would be able to tell if it was sick), and it should appear listless.
It dies.
It's dead.
Lethargy Breaking out in hives. Stumbling and disorientation Colic. Going off feed. When in doubt get a sample of the plant if you can, call your local extension office or University ag. dept. to ID the plant (many will let you email them a picture of it) and call the vet!