Chocolate is derived from the roasted seeds of Theobroma cacao, which contains certain properties that can be toxic to cats: caffeine and theobromine. When ingested, these two ingredients can lead to various medical complications and may even prove fatal for your cat.
Increased body temperature
Increased reflex responses
Increased heart rate
Low blood pressure
Advanced signs (cardiac failure, weakness, and coma)
Your veterinarian will perform a complete physical exam, including a chemical blood profile, an electrolyte panel, and a urinalysis. These tests will help determine if there is a chocolate/caffeine overdose.