All of creation knows the Creator: the animals of the field, the birds of the air and the fish in the sea. He made them all. Fish piled into a net at His command. He sent ravens to feed His prophet. A donkey that had never been ridden humbly submitted to give His Lord and King a ride into Jerusalem. God kindly cares for His creatures and expects us to do the same. Old Testament law forbade the abuse of animals. Animals will not harm or be harmed in the new earth.
“Are not two sparrows sold for a cent? And yet not one of them will fall to the ground apart from your Father…So do not fear; you are more valuable than many sparrows.” Matthew 10:29 &31 (NASB)