Why Rats Are Only With Us For A Short While

I found this on a rat forum and I thought it was sweet. I'm not religious or anything but this is a cute little story...
>One day, some angels went to God and asked if they might spend some
time on Earth, to learn and perhaps to teach. He answered that some of the people might be frightened of the angels, that His children's idea of beauty might not be His own. The angels replied that maybe those who could look past the
differences deserved the blessings that they could give. But God was
still concerned. The angels needed Heaven's air to breathe; they would
suffocate down on Earth. The angels promised to hold their breath as long as possible, and would return when they could not hold it anymore. God agreed and sent down the angels.
>
>Many people were frightened of these creatures, despised them, and
tried to kill them in large numbers. However, the few who recognized the angelic qualities in the beings took them in and sheltered and fed them. In return,
they received more joy and laughter than they could possibly imagine.
But alas, soon the angels could hold their breath no longer. After just a short time on Earth, they left to go back to Heaven. But they were sure to tell the next group of angels exactly who to seek out when they went down.