Hinduism is not a Dharma but it is a lifestyle which makes human being simply from animals.
An animal can't follow hinduism cause it will change his lifestyle. We all know there are three type of animals Carnivorous, Herbivorous, Omnivorous.
We all know the animals behaviour but we only change to human being after taking hinduism as our lifestyle. Hinduism is not mere just temples and idols. It is very very very vast. A normal animal can't understand. If any one wants to understand Hinduism then he has to make hinduism as his lifestyle.