Here are some of the potential signs of overgrown teeth to look out for: (petsmagazine.com.sg)
Also monitor the inside of their mouth for overgrown teeth, as this can happen when a rabbit does not have a proper hay diet (hay is important not only to their general health, but also because it wears down their teeth which continuously grow throughout their entire lives). (petguide.com)
Standard Chinchillas are susceptible to problems such as overgrown teeth, flystrike and ear mites. (petguide.com)