"crossword puzzles,for example, with the encrypted name"
on the one hand, a Yak can carry intrigue, say "pet" - and the result is a bed

on the other, on the website there is a search engine and it focuses on the description of a Yak, i.e. in the above puzzle will be listed something like "furniture".
If you want to solve something mysterious of Jacob, look for the tag "rebus".