The ASPCA Animal Poison Control lists several additional people foods as potential pet hazards. The text below is reproduced verbatim from the ASPCA public advisory.
> Citrus The stems, leaves, peels, fruit and seeds of citrus plants contain varying amounts of citric acid and essential oils that can cause irritation and possibly even depression if ingested in significant quantities. Small ingestions, such as eating the fruit, are not likely to present problems beyond minor stomach upset.
> Coconut and Coconut Oil When ingested in small amounts, coconut and coconut-based products are not likely to cause serious harm to your pet. However, the flesh and milk of fresh coconuts do contain oils that may cause stomach upset, loose stools and diarrhea.
> Excessively Salty Foods Excessive salt intake can produce increased thirst and urination, and sometimes abnormal electrolytes in the blood depending on the amount ingested. Signs of salt toxicity can include vomiting, diarrhea, depression, tremors, seizures and even death.
Source: pdf-raw/pet-toxicology/aspca_people_foods.txt (faithful tag-stripped extraction of https://www.aspca.org/pet-care/animal-poison-control/people-foods-avoid-feeding-your-pets).
Claims (verified C1 substrings of source_file)
The stems, leaves, peels, fruit and seeds of citrus plants contain varying amounts of citric acid and essential oils that can cause irritation and possibly even depression if ingested in significant quantities.When ingested in small amounts, coconut and coconut-based products are not likely to cause serious harm to your pet.Excessive salt intake can produce increased thirst and urination, and sometimes abnormal electrolytes in the blood depending on the amount ingested.Signs of salt toxicity can include vomiting, diarrhea, depression, tremors, seizures and even death.