Animals can benefit from mantras too!

In Manayunk I met Kelsey and her furry friend. She told me that she was, and still is, on a deep quest for knowledge and had read and studied all the main religious texts and queried deeply about many different paths. I was genuinely impressed with her inquisitiveness and told her it sounded like she was trying to find the Supreme Absolute Truth. She resonated with that, and mentioned that she had chose the Bible at that time and the teachings of Jesus. I showed her the picture of changing bodies in the Bhagavad Gita As It Is, and said that all living entities (even pets, like your dog!) have spirit souls, and that we are all part of the Supreme Spirit Soul. Her dog jumped up and barked in agreement. She deeply appreciated the book. I could tell that her mind was telling her not to take it, but she literally couldn't let the book go. She clutched in tightly to her chest and then laid it affectionately on her lap, as she reached for a donation. She had such a genuine thirst for knowledge that really left an impression on my heart.  

"Lord Kṛṣṇa is the supreme spirit, the Supersoul, and the living entities are His very minute parts and parcels. Of course, we cannot divide the tip of a hair into such fine particles, but spiritually such small particles can exist. Spiritual strength is so powerful that a mere atomic portion of spirit can be the biggest brain in the material world. The same spiritual spark is within an ant and within the body of Brahmā. According to his karma, material activities, the spiritual spark attains a certain type of body. Material activities are carried out in goodness, passion and ignorance or a combination of these. According to the mixture of the modes of material nature, the living entity is awarded a particular type of body. This is the conclusion." [CC Madhya 19.140, purport by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada]