Not much is known about this video, but we can only assume he is fattening up this leech to catch the new world bass record.
A man, seemingly in Japan, has a leech as a pet. Judging from the numerous bite marks on his arm, and the leech’s size, he lets Fido feed on him pretty regularly.
Leeches are parasites and can grow as big as they feed; meaning, the more blood they consume, the bigger they get.
I see a blockbuster film on the horizon.
The only point of a pet leech would be to raise bait big enough for the next bass world record, right?
I thought medical advancements left the practice of leeching blood back in the 1800s but apparently it’s making a comeback in the medical world. I’ll leave it to you to look that up.