Glossary
![Domestic Cat Claw Protractile Claw](../../../../images/content%20images/Resampled/P/Cat%20Claw%20Close-up%20L.jpg)
Claw
The pointed, slender and curved structure on the end of a digit (usually a toe).
Made from a hard protein, keratin.
![Claw of Cat](../../../../images/content%20images/Small%20Left%20Pane%20Images/Claw%20Extreme%20Close%20Up%20SL.jpg)
Made from a hard protein, keratin.
![Claw of Cat](../../../../images/content%20images/Small%20Left%20Pane%20Images/Claw%20Extreme%20Close%20Up%20SL.jpg)
Retractile Claw
Claw that can be retracted (drawn back) into its protective sheath.
![Cat Claws](../../../../images/content%20images/Small%20Left%20Pane%20Images/Cat%20Claw%20Close-up.jpg)
![Cat Claws](../../../../images/content%20images/Small%20Left%20Pane%20Images/Cat%20Claw%20Close-up.jpg)
Register
To imprint a track on the substrate.
![Lion Registers Paw](../../../../images/content%20images/Small%20Left%20Pane%20Images/Lion%20Register%20in%20Mud%20SL.jpg)
![Lion Registers Paw](../../../../images/content%20images/Small%20Left%20Pane%20Images/Lion%20Register%20in%20Mud%20SL.jpg)
Register
To imprint a track on the substrate (ground).
![Lion Registering Paw](../../../../images/content%20images/Small%20Left%20Pane%20Images/Lion%20Register%20in%20Mud%20SL.jpg)
![Lion Registering Paw](../../../../images/content%20images/Small%20Left%20Pane%20Images/Lion%20Register%20in%20Mud%20SL.jpg)
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