We might call it ‘a responsibility’ these precious folks take on, but I would bet they perceive it as a blessing they may be engulfed with.
They will reap neverending rewards for this act of kindness.
Be it people or animals, the ones abandoned by others, who have no hope anymore, to watch them blossom and reach potentials and happiness, and the joy they give you just by being themselves, it is an honor to take of little ones like these.