Thank you Ensapa..
We must not forget our four-legged friends when perform puja. They too require to collect merits.
It has been an old practice elephants have been killed for the poachers to harvest the ivory. With the request that we should offer the best, ivory became a much sought after item.
Jessie, not only the four legged friends, some have less or more than 4 legs. Hehe...
There are quite a few ways to help the animals that hav passed on and I am sure that many will know what mantra to recite on them which is Om Mani Peme Hung.
By Lama Yeshe
http://www.lamayeshe.com/?sect=article&id=213 When the animal is dying, you can do the Medicine Buddha practice, visualizing the Seven Medicine Buddhas on the crown of the animal. Then you can also do the Thirty-five Buddhas practice, with nectar coming and purifying the negative karma, taking strong refuge to the Thirty-five Buddhas to protect and guide.
When the animal is in the process of dying or even after the breath has stopped, if you have some sand from a Kalachakra sand mandala, you can mix it with butter and put it on the crown. Each sand grain has numberless buddhas abiding in it. It’s especially good if it is blessed by His Holiness the Dalai Lama.
Then burn the body. If there is a good practitioner or a lama available to do the jang-wa puja, then do that when the body is being burned. After the body is burned, keep some pieces of bones, and if possible, do jang-wa again on the bones. Crush the bones and make powder. Mix with other material and make a stupa, or more than one stupa. Put the stupa in a garden if you have one and then flowers can be offered to the stupa. Dedicate to your animal for a good rebirth and enlightenment.
But it will be better if we can help them before they die. There are so many mantras that we can chant and blow the mantra onto them. Do check out the link above for more information.