Rabbit's dissertation

A rabbit is sitting on a stump and writing something. A fox passes by and asks:
- What are you writing, Rabbit?
- I'm writing a dissertation "How rabbit hunts a fox"
- Where did you see this?!
- Come on! I will show you…
A wolf passes by...
- What are you writing, Rabbit?
- I'm writing a dissertation "How rabbit hunts a wolf"
- Where did you see this?!
- Come on! I will show you…
Round the corner a big lion lies in the pile of bones.
Moral! It doesn't matter what is your dissertation title, it is important who is your scientific adviser!

Have fun in Ukraine!