Some Ans. Questions 2014 by -'Abdu'l-Bahá- 1 Para

The exaltation of the animal world is to possess perfect members, organs, and powers, and to have all its needs supplied. This is the height of its glory, honour, and exaltation. So the supreme felicity of an animal resides in a green and verdant meadow, in a flowing stream of the sweetest water, and in a forest brimming with life. If these things are provided, no greater felicity can be imagined for the animal. For example, were a bird to build its nest in a green and verdant forest, in a pleasant height, upon a mighty tree, and atop a lofty branch, and were it to have at its disposal all the seed and water that it requires, then this would constitute its perfect felicity (15:4)

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