Bat bites are likely to be poisonous, cause cardiac arrhythmia and rabies. 1. Poisoning: Bats are poisonous creatures, and if bitten by a bat there is a possibility of a toxic reaction, which may lead to redness and edema of the skin, and in severe cases may cause itching of the skin. Some people will get some toxic blisters on their skin after being bitten by bats. 2. Causing cardiac arrhythmia: When bitten by bats, saliva remains inside the wound, which is easy to be infected with Nipah virus and Hantavirus, thus leading to fever and heat in the body and causing cardiac arrhythmia. 3. Causing rabies: Bats are also a kind of mammalian blood-sucking animals that carry many kinds of viruses in their bodies, including rabies virus. After being bitten, it may spread the rabies virus, thus causing rabies. After being bitten by a bat, you need to strengthen the treatment of the wound and treat it under the guidance of a doctor.