I tried the link and there were several videos on octopi??? while i think octopi are amazing creatures (imagine a basenji with 8 suction cupped legs!), it's not what I was looking for.
I found that when I lived without dogs for several years, I was allergic when a dog licked me, or if it's hair was a little dirty. But then after being around dogs a lot more, between having my own, and working with lot of others, that allergy has completely subsided. I definitely think the body is able to work thru some mild allergies with exposure.