https://www.google.com/search?q=pet+deer&tbm=isch&source=iu&ictx=1&fir=_d0DQx7eKRLIUM%253A%252CT5xAHrgBVsngSM%252C_&usg=__WVmuc71BPH-hwveUmwD0PKeD6vE%3D&sa=X&ved=0ahUKEwjRw7X7ysrYAhVH82MKHXZaBWIQ9QEIaDAO#imgdii=rvj1e9a9NU25cM:&imgrc=_d0DQx7eKRLIUM:
And they make decent pets, apparently.