how much it's important Content Keywords is?

Hello all, as you read from the subject i want to know how much is important/depend the site ranking on the Content Keywords quantity
freind has web site selling stuffed animals lets say dogs and cats
in results of stuffed animal cat it's rank in top 5
stuffed animal dog it's rank in 2nd page
back links with Anchor text stuffed animal dog 5 times more than stuffed animal cat
i had dig more in the webmaster google tools and i found that under Content Keywords
keyword
1- cat 989 times
2- stuffed animal 900 times
but dog has only 32 times
is it important factor !!!!!! and how it's really depend any good artical or book to know how % have to be in the site conent
thanks

Stuffing content is so 2008. Anybody doing this must living under a rock.

DO NOT stuff keywords. Google is intelligent enough to know what your article's about.

Content Hungry Increase day by day. So, 1000 - 1200 words enough for your keyword. Maybe you mentioned LSI keywords too.

So, your content make fire on Social Media.

The density of keyword is important. One tip that I usually use is that put the keyword in the Title and Heading because Google searches Title and Heading first.

Read this guide, it explains much better than I ever could: http://www.blackhatworld.com/blackh...diot-proof-guide-authority-site-building.html

Now Google seems to be like crazy about overoptimization. So, it is recommended to use your keyword once in title, h1 tag and in body. Thats all. You may use related keywords also.