Dreaming of a bite signifies betrayal, anger, or deep love for the person being bitten. If you dream of biting yourself and dropping a piece of your flesh on the ground, it suggests gossiping about others. This dream may reflect the tensions in your relationships or the complexities of your emotions.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Bite" (page 40).
In a dream, a bite signifies perfidy, rancor or extreme love for the one who is bitten in a dream. If one bites himself then spits a piece of his own flesh on the ground in a dream, it means backbiting and belittling others. Biting one's own fingers in a dream means regret or fury, rage and anger. Ifone's fingers bleed from such bite in a dream, it means tribulations caused by one's own shortcomings. A bite in a dream also signifies extreme anger. Ifone is bitten by another person in a dream, it means that he will enjoy happiness and success at the beginning of his professional life, then he will suffer from an illness, eye inflammation, ophthalmia, or from heart problems. Biting on an apple in a dream means satisfying one's desires. (Also see Pinch; Tongue)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.