A complete 4K camera and 3-axis gimbal system come integrated with the Phantom 3 Professional edition quadcopter from DJI.
Standing vs. Lying Down. It's a common misconception that cows don't lie down to rest and that they sleep standing up, just like horses do much of the time. In fact, cows actually lie down for up to 14 hours per day, standing up every few hours, stretching and then lying back down again.
Cows are milked for an average of 3-4 years. A cow must have a calf in order to produce milk.Calves are fed milk until they are 8-9 weeks old. Before milking machines were invented in 1894, farmers could only milk about 6 cows per hour. Today, farmers use machines to milk more than 100 cows per hour. Cows are ruminants, which are cud chewing mammals.