A breeding colony of huge American bullfrogs that can grow to 8in long and make a noise like a cow, were reported to be in an East Sussex pond when massive tadpoles were discovered. 
English Nature were called in and they confirmed their identity as American bullfrogs, and so far they have removed over 7000 bullfrog tadpoles and young frogs.
If left alone to breed these creatures, which will eat almost anything that will fit in their jaws, can devastate local wildlife, including fish.
English Nature’s amphibian specialist Jim Foster said: “There is only a tiny chance that the frog in your pond is a bullfrog, but we want to track down any remaining animals, particularly where there is a chance of breeding.
“If bullfrogs become established, the consequences for our native wildlife could be disastrous, so it’s crucial that we take action now.”
Bullfrogs used to be imported for pets, but this was banned in 1997 after concern about their potential impact if released into the wild.
Bullfrogs may also be present in garden ponds, as their tadpoles were readily available in garden centres until recently.
