My Dog definitely had a great sense of humour, he would clearly laugh - even when the joke was on him, bless him.
My Cats on the other hand, well they disapprove most strongly about all forms of laughter, especially if it involves human giggles after rare feline clumsiness...
Although they did seem to smirk when the Dog got told off!
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-~ God-damn the day that I was born ~
The night that forced me from the womb ~-