Hi @peks! Thanks for your comments, and as I have never been there, have been using the info from Internet regarding the numbers of the animals. Have watched clips with the owner, where he states they are the numbers I have mentioned in my article, the same number info stays in the article in wikipedia, unfortunately is just in Russian for now. The info is from the spring of 2017.
I have collected some more info today and the official site says now the number of the lions is about 50.
So I think they should be less by numbers, as I guess the newly born cubs should be not included, as they do not stay long in the park, but are being given to some other parks or Zoos.

One more time, thanks for your comments, will keep you updated with some more clips from the park, as I have watched a lot of them.