selective blur on a mule an a donkey looking skeptical and determined at a camera with a cloudy grey sky in zasavica, serbia. a

mule animal zasavica serbia srbija europe field donkey mammal livestock pasture portrait cute nature outdoors agriculture farm farming stoka cattle countryside grey sky cloudy serbian poljoprivreda horse wildlife farmland hybrid agricultural landscape natural rural scene central balkans selective blur looking skeptical determined camera serbia posing front afternoon domestic equine horse offspring male jack female mare species numbers chromosomes two first-generation hybrids