The only group of Sambar deer we saw in Ranthambore was the one in the featured photo. Of the group of four, the three in front seemed to be a mother and her two young. The one in the background looks like another adult female. The group was aware of us, but they continued to feed. The female at the back occasionally lifted her front feet off the ground to reach for hanging leaves.
Although we did not see any male Sambar, they were definitely around. Every day we heard alarm calls of lone Sambar: a short bark repeated periodically. These alarm calls signify a tiger or a leopard in the neighbourhood. I learnt a bit of jungle lore from one of the guides. Apparently Sambar keep making these alarm calls as long as the tiger is on the move. When it sits down, the calls cease, but the Sambar keeps a watch and calls again when the tiger starts moving.
We tracked the movement of a predator this way once. It seemed to have been fairly close to the road when we heard the alarm call of the Sambar first, but then it gradually moved away and we lost it. The unseen predator was reluctant to move away, because it hunkered down several times before giving up and vanishing into the forest. It was probably a leopard, because we were near a leopard’s kill.