The toxic purple ink and slime on their body can be harmful to dogs. Sea hare poisoning can also result in tremors, excessive drooling, muscle weakness or spasms and difficulty walking.

The Hagfish Is the Slimy Sea Creature of Your Nightmares The hagfish is a slime-emitting ocean-dweller that's remained unchanged for 300 million years--and it shows. It has a skull (but no spine ...