The Red-brocket Deer is quite a champion when it comes to freeze-at-the-spot.
Red Howler Monkeys are also known as social animals. I have always seen them either resting, eating or traveling as a group.
Here you see one of the members of such a group. It is a mother with her infant. Still a young lad as it was seen clinging onto its mother. The group was resting and the mother decided to find a quiet spot to be alone with her baby. Sometimes I see the mothers play with their baby. The only time she lets go of her little one is when she has to eat. The baby is hanging, most of the time, up side down nearby until she is done eating.
Even in the jungle mothers know how to take care of the little ones.