As It Happens7:10Not only are Komodo dragon teeth razor sharp; they're also iron coated Not only do Komodo dragons have serrated, razor-sharp teeth that constantly replenish themselves — they're ...

Beavers must continually gnaw on bark and wood to keep their teeth trimmed so that they do not grow too long. Beavers travel for long distances from their lodges in search of food.

Beaver teeth are orange. Beavers have long incisors that get their orange color from an iron-rich protective coating of enamel. Their teeth grow continuously throughout their life, ...

A beaver’s incisors never stop growing and are super strong. The incisors are laminated and made up of many layers. The rear teeth are used for grinding and crushing.

Gnawing mammals such beavers, rats, and shrews sport the metal in their teeth, which toughens their bite. But scientists have long believed reptile teeth didn’t have special adaptations to keep ...

Iron teeth aren’t unique to these reptiles — beaver teeth get their toughness from iron-infused enamel, says paleontologist Aaron LeBlanc of King’s College London.

Every beaver has its own combination of scents, permitting identification of individuals. Scents on the mound may be renewed frequently, especially if strange beavers are known to be wandering nearby.

Nutria — which resemble a cross between a beaver and an over-sized rat — can grow to be two feet long, with an additional 1 ½-feet of tail, and weigh up to 20 pounds. They have brown fur, a ...

Komodo dragons are an endangered species and the world's largest living lizards, sometimes growing as long as three metres. They make their home on several Indonesian islands, where they are apex ...