I live in the country... so maybe I have a more blinkered view.
1) Cows can jump and jump very high. I've seen them clear est. 5ft.
2) There are cow related deaths every year in my imediate area (and not including the ones where people have hit them with cars and come just as bad off

)
3) Cows had jumped into my neighbours garden and trashed it. I don't remember reading in the news that they also could have stampeded or simply attacked her or her 2 small dogs etc. They were just example animals that people think are lovely and cuddly and more popular but just as/more dangerous.
So maybe I don't think it's quite the same stretch. Either way I'm just saying it's said in the first paragraph to draw in readers and continue the negative view that all reptiles are monsters. No need to keep up the bad reputation because they already have a bad reputation. Just my opinion.
And yes it was the original pet owners fault.