Two of the largest snakes in the world, the reticulated python and rock python , as well as the longest venomous snake in the world, the king cobra , inhabit the park. Other snakes found here include the Indian cobra , monocled cobra , Russell's viper , and the common krait .  Monitor lizard species found in the park include the Bengal monitor and the Asian water monitor .  Other reptiles include fifteen species of turtle , such as the endemic Assam roofed turtle and one species of tortoise, the brown tortoise .  42 species of fish are found in the area, including the Tetraodon . 
* Harappa cities were one of the oldest cities in the Indian subcontinent.
* Cities were divided into two or more parts with the higher one known as the citadel. Walls of baked brick can last for thousands of years.
* Planning of the City: Special prominence was given to the citadel. We can find special buildings in the citadel. For eg; in Mohenjodaro a special tank called Great bath was built. Other cities like Kalibangan and Lothal have fire alters where special sacrifices can be performed. Some cities like Mohenjodaro, Harappa, Lothal have elaborate store houses too.
* Houses and Streets: Houses were of one or two storeys and built around a courtyard. Most houses have separate bathing area and wells to supply water. Many cities have covered drains.
* City Life: City was a very busy place. Trade in metal and precious stones existed with far off places. There were crafts persons who made special seals made of carnelian, statues made of bronze etc. terracotta toys with which children used to play with. They also used seals for authentication.
* Occupation: It was mostly a farming community. People living in countryside, grew crops and reared animals. They grew many crops like Wheat, Barley, mustard, rice, pulses etc.