Caverat said:
... animals don't have personalities ...
So what're we? Plants?
"dogs have personalities" : 69,600 results
"humans have personalities" : 45,700 results ... including non-humans
"humans have personalities" : 37,300 results ... not including non-humans
"cats have personalities" : 30,400 results ... although most of the first page is asking whether they do or looking for ones that are like dogs because the default cat is almost exactly this [http://www.mcafee.cc/Bin/sb.html].
"people have personalities" : 25,000 results ... including "Do Japanese people have personalities?"

"trees have personalities" : 7,310 results.
"pigs have personalities" : 5,510 results ... including guinea pigs.
"dolphins have personalities" : 4,030 results
"pigs have personalities" : 3,250 results ... not including guinea pigs.
"chimps have personalities" : 743 results
"gorillas have personalities" : 213 results
"apes have personalities" : 8 results
"whales have personalities" : 8 results
Maybe the number of google search results isn't a good indicator after all.