Deer, like Jackrabbits, will leave their young alone for up

from Google "Deer, like Jackrabbits, will leave their young alone for up to twelve hours at a time while they forage. The babies know to stay still and quiet, tucked into the grass where their mother left them." 

https://discoverwildcare.org/was-this-fawn-kidnapped/#:~:text=Deer%2C%20like%20Jackrabbits%2C%20will%20leave,where%20their%20mother%20left%20them.