Funnily enough, cattle would probably be rather safe. From their Wikipedia entry:

Cattle Decapitation's songs protest the exploitation and consumption of animals, the abuse of the environment and subjects such as misanthropy and genocide of the human race. Much of the band's music is based on putting humans in the situations that animals are subjected to, for example animal testing, slaughter, etc. The band's lyrics are largely concerned with human impact on the environment, the ethics of eating meat and animal rights.