I will add on here.
Yes. In the early days of FH we had a regular karma meter with down and up votes. People could indeed bite someone instead of nuzzle which would give them negative karma.
I had many discussions regarding this with both members as staff, and after many minor drama cases regarding the karma and usage of it, the staff decided to change the name of the karma functions name but also remove the negative vote. This overall keeps a more friendly feeling over the forum which has been proven to work a lot more nicely even though the negative vote can be missed at times. People did tend to abuse it over minor things, even logging on several accounts or telling friends to go and bite someone due to them doing, or saying something that in all honesty wasn't that bad.
Today the forum gets by slightly easier.