What is the best way to get over the loss of a pet?

What is the best way to get over the loss of a pet?
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This is Lolly he had to be pot down today because of his old age his kidneys and lungs were failing
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That's Lolly'in the picture he was a big softy and was 22 years old
What is the best way to get over the loss of a pet?
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