cow on heat, in season and fecund, smelling on the back of red and white fertile cow, close up sniffing the tail

agriculture air animal back blue breeding brown buttocks cattle close countryside cow cows dairy detect smell dutch farming fecund happy head heat holland season livestock looking love milker netherlands nose oestrus portrait prat prolific rear view red rump rural rut side sniff snuff snuffle together white smelling fertile sniffing tail