A Venerable related a very short story in one of the teachings. It was said that Chenrezig (who is also known as the 1000-Armed Guan Yin, Goddess of Mercy), once manifested as a bee, to thousands of worms who were dying in a pool. Unlike humans, animals and insects do not and can never learn nor understand the Dharma. So the bee, through its fluttering wings, with its buzzing sound of Guan Yin's compassionate mantra "om mani padme hum" hovering above the dying worms. The bee/Buddha expounded the Dharma to the poor worms. The worms immediately died and were reborn in a higher realm as human beings.
The morale of the story is, once you are ready or once your karma ripens, the Buddha will come in any form to guide you, to inspire you, to liberate you. We have no karma to meet the Buddha until our karma ripens. Hence we are only able to have realizations through the appearance and the guidance of a guru. In this story here, the guru appeared in the form of a bee to the dying worms. Hence we know that the Buddha is definitely working to help us in the form of a guru or teacher.
And I leave you with a video of my precious guru, Lama Zopa Rinpoche, who is liberating animals everyday, by chanting mantras to them and blessing the surroundings.