There are many. Colic is a big one. Accidents where horses are hurt and need to be put down is another killer. My own horse was put down because of breaking his shoulder. Strangles kills some horses, as does horse flu, broken bones, etc. There is no clear cause.
Probably, earthquakes or volcanic activity. Or the movement of plate tectonics.
The most frequent cause of horse deaths is colic.
what were the most cause able deaths in 1990 to 2006
Most deaths and injuries in a tornado are cause by flying or falling debris.
the most repeated value ( frequant value ) in a data set it is known as mode
Aftershocks cause the most earthquake-related deaths and injuries.
Aftershocks cause the most earthquake-related deaths and injuries.
Certainly Not
diarrhoea is the most frequent cause of death with a horses
Disease
Car accidents
Besides the obvious injuries and deaths, most deaths were the result of infection, dysentery, diarrhoea, secondary infections, pneumonia, and TB.