Sri Muthappan Temple, also called Parassinikadavu Muthappan temple is located on the banks of the Valapattanam river about 41 km from Thalassery. Principal deity of the temple is Sree Muthappan, a manifestation of two mythical characters called Thiruvappana and Vellattam. According to the local tradition the presiding deity is a folk deity and not a vedic deity, but there are recent attempts to associate the deity to Vishnu or Shiva.
Rituals of the temple is unique in that it does not follow the Satvic Brahminical form of worship, as in other Hindu temples of Kerala. The main mode of worship is the a ritual enactment of both the characters of Muthappan, through a traditional dance known as Muthappan Theyyam. Fish, meat and toddy are the customary offerings to Muthappan. Muthappan Thiruvoppana Mahothsavam is the major festival of the temple, celebrated for three days every year on 3, 4 and 5 March.
In the temple of Muthappan, dogs are considered divine and the temple entrance has an idol of dog, at both sides.