Although Mother and Father Koala are suspicious of the "other" bears, they do not like the panda bears and they do not trust the polar bears, their grumpiness melts away as they watch their little Koalas play together with "other" bears.
"Mother and Father Koala are suspicious of the 'other' bears. They don't like the panda bears and they don't trust the polar bears. But their grumpiness melts away as they watch their little Koalas play together with 'other' bears"--Provided by publisher.