My computer programming book contains the line "all promises are thenables, but all thenables are not promises", with the word "promise" meaning one particular thing, and a "thenable" meaning also some particular thing. From this context, it seems that the second part of that line means what I would phrase as "not all thenables are promises". So, in English, are (1) and (2) identical in meaning?

1. All animals are not dogs.
2. Not all animals are dogs.

In some languages, though, (1) means "none of any animal is a dog" and has a different meaning from (2).

I have also heard assertive statements like "All of these oranges are not good." Does this mean the same as "Not all of these oranges are good"?

As another example, are (a) and (b) identical in meaning?

 (a) All triangles are blue. All blue shapes are not triangles.
 (b) All triangles are blue. Not all blue shapes are triangles.

I usually take "All blue shapes are not triangle" to be "none of the blue shape is a triangle", and "All answers are not good answers" to be "none of the answer is a good answer" — so sometimes this may cause confusion to me.