![Beavers Castor canadensis](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Beavers Castor canadensis
Beavers Castor canadensis with beaver dam. Illustration based in Tierra del Fuego, where introduced beavers have damaged the closed ecosystem. Illustration from The Hidden Universe: Adventures in Biodiversity by Alexandre Antonelli
![Giant otter Pteronura brasiliensis](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Giant otter Pteronura brasiliensis
Emegent head of the Giant otter Pteronura brasiliensischewing on a recently captured fish
![Mute swan Cygnus olor](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Mute swan Cygnus olor
Mute swan Cygnus olor standing on one grey leg and clearly showing its orange beak