A new documentary from BBC called "Spy in the Pod" has captured what they claim to be footage of dolphins using puffer fish to reportedly "get high". According to a quote from the Daily Mail, "Zoologist and series producer Rob Pilley said that it was the first time dolphins had been filmed behaving this way." The toxins apparently have a narcotic-like effect on the dolphins.
The "Spy in the Pod" two-part series begins tonight at 8:00pm on BBC1.
On the other hand,
"Tetrodotoxin simply doesn’t make sense as a drug (and let’s be honest —if it did, humans would be snorting it off bathroom counters already)."