My animal obsession has been a family joke for years. I am currently saving my money to buy a farm in Oregon because I couldn't have enough pets the old fashioned way.
My son is also obsessed with animals, so I do think it is an aspie thing.
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I hate hearing, "you don't seem autistic/aspie". I have a nagging suspicion most people have no idea what autistic or aspie "seem" like in the first place...