Within sleep disorders, there are two key ideas, narcolepsy and cataplexy.  Some links below cover the informational aspect of narcolepsy.

• Dr. William Dement's Sleep Well Site
• NINDS Narcolepsy Information Page 
• Mayo Clinic Page on Narcolepsy  
• Stanford School of Medicine Page on Narcolepsy

Cataplexy is often a co-symptom of narcolepsy causing the person/animal to lose all muscle tone during an emotional time.  A second examination of cataplexy.

On this Stanford page, there are several videos of animals and one child with cataplexy.

In tomorrow's post, I will share more video finds on narcolepsy and cataplexy.