Researchers have found that lead poisoning is probably to blame for crocodiles in a lake at a World Heritage site in South Africa losing their teeth. The study sampled blood and tail fat tissues from 25 Nile crocodiles in Lake St Lucia, which is within KwaZulu-Natal province’s iSimangaliso Wetland Park, recognised by Unesco for its … Continue reading ‘Lead poisoning’ behind SA crocodiles losing teeth