I'm trying to find a proper synonym for "grande", as in the quality of three dimensional objects of occupying space, to use with a regular object, such as a "big dog". I'll explain my specific situation below.
However, when searching, this is what I find:
magnate, noble, prócer, ilustre, egregio, excelso, ínclito, sobresaliente, conspicuo
These have a totally different meaning, using the meaning of "great", as in good at something or respectable.
monumental, considerable, mayúsculo, extraordinario, desmesurado, desmedido, ingente, inusitado, gigantesco, colosal, exorbitante, enorme, tremendo, grandioso
These, while referring to space, all involve the concept of being "too big" for something. While "considerable" does not have that effect, it also does not provide the idea of something being big (as another meaning for "considerable" is also to be acceptable).
vasto, espacioso, extenso, holgado, amplio, ancho, alto, elevado
And finally, these ones are closer to that concept, but it is not completely correct to use them with the exact same meaning as "grande". A "big bed" is not the same as a "vast bed" nor a "wide or tall bed".
My specific purpose is to write this sentence. In the context, I have two dogs (one big, and one small), and I want to refer to the bigger one.
Mi perro más grande tiene (...)
I want to avoid the use of "grande" because it could also be understood as older, when I actually want to talk about size.