aaaaagh! my brain just looked straight through that :(

ok, thx. Tho... vaccinated would be better than vaccianted, too... x)

The first one would have been okay if be had been been (lol). Your version is correct and more explicit.

maybe that's because I'm not native, but this sentence seems incorrect to me, considering the task:

If the dog has not be vaccianted or wormed, the dog can not be accepted.

I feel like this is more appropriate:

If the dog has been neither vaccianted nor wormed, the dog can not be accepted.

Not an issue.

Ruby :

-for a 7 kyu, having no starting code is a bit harsh for beginners
-with out access to the class code, a beginner isn't going to easily know what are the types of the attributes

What is this if/else/ternary thingy you are talking about? :P

Great Kata. Voted 6kyu for the following reasons:

1. Simple instructions (mainly if/else statements for beginners and a compound ternary statement for experienced programmers) so about 7kyu difficulty
2. Complex programming concepts such as editing prototypes which makes it a bit too challenging for 7kyu programmers --> therefore 6kyu

Keep it up! :D

.this is totally a hint

Nice kata! Translated into ruby and CoffeeScript for your review and approval.

FWIW, at the time I did the translation, the average difficulty rating for this kata was too low. Object-oriented is at least level 6. Re-opening a class (or extending an existing prototype) is generally harder than creating a new class, however this kata is really nicely written as an entry level task for the concept, so would likely stay at level 6.