Bless the LORD, O my soul. O LORD my God, thou art very great; thou art clothed with honour and majesty. Who coverest thyself with light as with a garment: who stretchest out the heavens like a curtain: Who layeth the beams of his chambers in the waters: who maketh the clouds his chariot: who walketh upon the wings of the wind: Who maketh his angels spirits; his ministers a flaming fire: Who laid the foundations of the earth, that it should not be removed for ever. Thou coveredst it with the deep as with a garment: the waters stood above the mountains. At thy rebuke they fled; at the voice of thy thunder they hasted away. They go up by the mountains; they go down by the valleys unto the place which thou hast founded for them. Thou hast set a bound that they may not pass over; that they turn not again to cover the earth. He sendeth the springs into the valleys, which run among the hills. They give drink to every beast of the field: the wild asses quench their thirst. By them shall the fowls of the heaven have their habitation, which sing among the branches. He watereth the hills from his chambers: the earth is satisfied with the fruit of thy works. He causeth the grass to grow for the cattle, and herb for the service of man: that he may bring forth food out of the earth; and wine that maketh glad the heart of man, and oil to make his face to shine, and bread which strengtheneth man's heart. The trees of the LORD are full of sap; the cedars of Lebanon, which he hath planted; Where the birds make their nests: as for the stork, the fir trees are her house. The high hills are a refuge for the wild goats; and the rocks for the conies. He appointed the moon for seasons: the sun knoweth his going down. Thou makest darkness, and it is night: wherein all the beasts of the forest do creep forth. The young lions roar after their prey, and seek their meat from God. The sun ariseth, they gather themselves together, and lay them down in their dens. Man goeth forth unto his work and to his labour until the evening. O LORD, how manifold are thy works! in wisdom hast thou made them all: the earth is full of thy riches. So is this great and wide sea, wherein are things creeping innumerable, both small and great beasts. There go the ships: there is that leviathan, whom thou hast made to play therein. These wait all upon thee; that thou mayest give them their meat in due season. That thou givest them they gather: thou openest thine hand, they are filled with good. Thou hidest thy face, they are troubled: thou takest away their breath, they die, and return to their dust. Thou sendest forth thy spirit, they are created: and thou renewest the face of the earth. The glory of the LORD shall endure for ever: the LORD shall rejoice in his works. He looketh on the earth, and it trembleth: he toucheth the hills, and they smoke. I will sing unto the LORD as long as I live: I will sing praise to my God while I have my being. My meditation of him shall be sweet: I will be glad in the LORD. Let the sinners be consumed out of the earth, and let the wicked be no more. Bless thou the LORD, O my soul. Praise ye the LORD. Psalm 104
Solomon wrote the Book of Ecclesiastes. He was the wisest and wealthiest person in the world and could have anything he wanted. As a result, he experimented with everything that this world could offer him. It takes very little reading in the book of Ecclesiastes to learn Solomon's conclusion: all things that the world can provide are meaningless. Solomon did have a few things to say about humans and animals.their similarities and differences and important contrasts.
God put eternity into the hearts of people. People think about eternity, animals do not. This makes a distinction between man and beast-not a physical distinction, but a spiritual one. Solomon finds a difference here.
I have seen the task which God has given the sons of men with which to occupy themselves. He has made everything appropriate in its time. He has also set eternity in their heart, yet so that man will not find out the work which God has done from the beginning even to the end. Ecclesiates 3:10-11 (NAS)
People are wicked and can become righteous. GOD judges the righteous and the wicked. Doesn't make sense with animals, does it? Animals are not wicked or righteous. Animals are not made to understand sin and judgment. But we as humans understand those concepts explicitly.
That which hath been is now; and that which is to be hath already been; and God requireth that which is past. And moreover I saw under the sun the place of judgment, that wickedness was there; and the place of righteousness, that iniquity was there. I said in mine heart, God shall judge the righteous and the wicked: for there is a time there for every purpose and for every work. Ecclesiastes 3:15-17
The perspective in the verses below is clearly that of a physical comparison of man to animals. The spiritual distinction was made above. In this passage it is seen that both man and animals have breath, both die, and both go back to dust. From a physical or worldly perspective these physical comparisons point towards a completely meaningless existence. Animals do not realize that GOD exists. It is not their choice to live this way. If mankind, who lives on a higher plane than animals, makes the choice to ignore GOD, he is no better than an animal. Both turn to dust in the end. Both have no direct relationship with GOD. Solomon comes to the conclusion that a life and all it offers without a consciousness of God and a relationship with Him is meaningless.