The family I live with has a 14 year old shih tzu dog whom is adorable...but she keeps having seizures, or something where she crunches up painfully (not possessed, I swear it.) The lady of the house has fed her eggs (cooked) lately, but people online say that that should be fine. Is it not? Is it just because she is old? That might sound like a dumb question, but I am curious about the details. Thank you.