Originally Posted by
DanDrobates
Frogs in the genus ceratophrys will burrow for a few reasons.
1. They will naturally burrow deeper if the substrate is dry and the ambient temperature is too cool. In nature they will brumate during colder dryer conditions and form a layer of thick dry mucous over their skin to prevent moisture loss. This process is a natural reaction to the aforementioned conditions. They will also go off feed during this time.
2. On the opposite end of the spectrum, if temperatures are too high they will burrow deeper to find a cooler more comfortable temperature.
It would help to know the age of the frog, its size and the size and setup you currently keep it in. If the frog is entering brumation the best way to stop it (bear in mind it is preferable for them not to brumate in captivity unless you're cycling them for breeding) is to bring the temperature to the mid to high 70s and make sure the substrate is moist.