Final answer:
Animals have rights due to their ability to feel pain and have desires about the future, known as sentience.
Step-by-step explanation:
At least some animals have rights because of their important similarities with humans, such as the ability to feel pain and have desires about the future. This concept is known as sentience. Sentience refers to the capacity of animals to have subjective experiences, including the ability to experience pain. This ability justifies their rights and recognition as beings deserving of moral consideration.