Amphibians also have special skin glands that produce useful proteins. Some transport water, oxygen, and carbon dioxide either into or out of the animal. Others fight bacteria or fungal infections.

Animals can be divided into groups ... Fish can be found in all kinds of water, like oceans, rivers and lakes. In Northern Ireland, some common fish types found in rivers include salmon and ...

Over the course of the history of life on Earth, animals have developed all kinds of unique and bizarre ... about the prevalence of venomous amphibians in the wild. Read more: What Damages An ...

"Amphibians are the world's most threatened animals," Duke University frog researcher Junjie Yao, who was not involved in the study, told The Associated Press. The biggest threat to amphibians ...