Thanks, I did mine like this and wasn't sure about it.

Note that although this works, this is not best practice as a new copy of the bark method will be created for each instance, rather than sharing a single instance of the bark method via inheritance. No inheritance is being utilized here. So it results in unnecessary extra memory usage.

You don't need the curly braces. Nice solution.

Same issues here, trying to debug and see whats going on..