Are animals on the runway defined as a runway incursion?
The FAA defines a runway incursion as:
Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle or person on the protected area of a surface designated for the landing and take off of aircraft.
No but they are a FOD hazard!
Reminds me of a funny ATC conversation I heard out at KRVS a long time ago:
Tower: Cessna Niner Fife Four Fife Niner clear for takeoff Runway one niner right.
Cessna 95459: Unable to comply…there appears to be a skunk on the active.
Tower: …well if I had a .22 I’d grease him for you, but continue holding short and let me know when he’s clear of the active.