I believe that we are all capable of random acts of kindness from an early age, and that we subconsciously extend these random acts as compassion to all living things. I did not necessarily recognize this as compassion when I was a child, but I saw consistent examples of small, random acts of kindness from my mother. By the age of 12 years old, I was consciously aware that these small examples were really powerful acts of compassion, and I took those lessons to heart.
My experience has been that random acts of kindness are effortless, and often times create chain-reactions in a positive way. One small act can lead to another small act that may result in another random act, and so on and so forth. Each act is part of the circle that forms true compassion to other living beings. I can delight in being the doer of a random act of kindness as much as I can delight in being the recipient. A kindness can go a long, long way.