i googled the story on Chance and Second Chance. This was written before Second Chance started attacking and goring the owner. But the article talks about how very slight differences in environment can make a whole difference in animal personality! here is the article part I snipped:;
This is the same animal back again. This is not a son or a twin brother," says Mrs. Fisher. "It's him." Second Chance is the spitting image of Chance. And as for personality, say the Fishers, the two are identical. For example, Chance's favorite spot was in the front yard, just outside the kitchen window. "The day we brought Second Chance home, he laid in the same exact spot. And the first time he saw Ralph, he loped across this pasture toward him, licking his face and his boots," says Sandra Fisher. "I'm a little hesitant to say he has memory, but he has the same instincts. Let me put it like this: Given the same problem, Chance and Second Chance would figure it out the same way." Studying questions such as the cognitive ability and behavior of clones is of major importance, but it's hard to draw conclusions just yet, scientists say. There are simply not enough clones in the world to make valid comparisons. That's why A&M scientists are so excited about their new piglets. Unlike cloned cattle and sheep, which produce only one offspring at a time, the litter of pigs provide scientists a chance to study several clones at once. Consider for a moment that Bertha is roughly 40 percent larger and more aggressive than Tina, the nervous runt. Exact same genes, totally different animals. "We're seeing some pretty drastic differences in the body weight and behavior," says Jorge Piedrahita, who heads the pig-cloning project at A&M. "What that tells us is that small differences in environment can cause large differences in personality." janice yipie tie yie yo
