Perhaps scientists have spotted an opening for new designer pets more suited to are climatic changes. I'm not a big fan of tampering with nature, but a can see an obvious advantage. Whenever a new popular product comes on the market, there is always someone trying to make a quick buck by producing a cheaper version. Our Chav population could soon be thinned out by crayon eating window lickers trying to cross pitbulls with crocodiles. However, on the negative side, nobody beats the Nazis when it comes to mad eugenics. Who knows what they would come up with?
Going back to the subject in hand, Toxoplasma Gondii has been known to cause blindness in the host, according to the BBC. Wouldn't blind whales be a danger to shipping?