When [Pope Benedict XVI] was asked about the rights of animals in a 2002 interview, he said, “That is a very serious question. At any rate, we can see that they are given into our care, that we cannot just do whatever we want with them. Animals, too, are God's creatures . . . Certainly, a sort of industrial use of creatures, so that geese are fed in such a way as to produce as large a liver as possible, or hens live so packed together that they become just caricatures of birds, this degrading of living creatures to a commodity seems to me in fact to contradict the relationship of mutuality that comes across in the Bible.”
“Animals are God’s creatures. He surrounds them with his providential care. By their mere existence they bless him and give him glory. Thus men owe them kindness. We should recall the gentleness with which saints like St. Francis of Assisi or St. Philip Neri treated animals. . . . It is contrary to human dignity to cause animals to suffer or die needlessly.”
Pope John Paul proclaimed that “the animals possess a soul and men must love and feel solidarity with our smaller brethren.” He went on to say that all animals are “fruit of the creative action of the Holy Spirit and merit respect” and that they are “as near to God as men are.”
http://www.goveg.com/f-popebenedictxvi.asp