Bed bugs are small, reddish-brown insects that feed on the blood of humans and animals. They are about the size of an apple seed and are most active at night. Bed bugs can hide in various places, including mattresses, bed frames, and furniture, making them difficult to detect. These pests reproduce quickly, with a female laying up to five eggs per day. Infestations can occur in homes, hotels, and other places where people sleep. While bed bugs do not transmit diseases, their bites can cause itching and discomfort, leading to sleep disturbances and anxiety.