Baymule
Herd Master
That bug is a blister beetle. They are toxic and kill horses if they ingest them.
https://extension2.missouri.edu/g4569
https://www.vet.k-state.edu/vhc/services/equine/timely-topics/blisterbeetleFeb16.html
http://factsheets.okstate.edu/documents/epp-2072-blister-beetles-and-alfalfa/
https://extension2.missouri.edu/g4569
https://www.vet.k-state.edu/vhc/services/equine/timely-topics/blisterbeetleFeb16.html
http://factsheets.okstate.edu/documents/epp-2072-blister-beetles-and-alfalfa/