Leeches can make excellent pets for those who are not too picky to allervate them. They can survive for several months without food and need minimal care.
Steps

Step 1. Get an aquarium larger than two liters

Step 2. Put 5 or more cm of gravel on the bottom

Step 3. Then fill it with water from a pond or stream
Never use purified water.

Step 4. Cover the tank with an airtight lid

Step 5. Wait a day for the water to stabilize

Step 6. Get the leeches
You can catch them yourself in the wild or purchase them at a fishing supply store.

Step 7. Insert them into the aquarium

Step 8. Wait two days

Step 9. Start feeding them
One worm is sufficient for each specimen.

Step 10. Remove dead worms a few hours later

Step 11. Feed the leeches every 2 to 3 weeks

Step 12. Change the water when it looks dirty or smelly
During the procedure, change only half of them.
Advice
You can catch leeches from a small stream at night
Warnings
- Always keep the lid on the aquarium.
- Never let them suck your blood.