Leptobrachium abbotti lives in the primary and secondary lowland forests below approximately 1.000 m asl .

At its upper end of the elevational range, it is replaced by L. montanum.

This frog is brown above and mimics dead leaves. The head is broad. The eyes are big. Outside the iris the eye sclera is blueish. 

The advertisement call is a loud 'quak'. 

The tadpole of L. abbotti is found in small to medium-sized streams with rocky stream bed. As the other species in the genus, tadpoles grow big (> 70 mm). 

The bigger the larvae grow, the darker they get. But a dark blotch is always present at the trunk-tail junction. In early larval stages, whitish ear capsules shine through the skin behind the eyes.