If, however, you need to be more specific, demonstrative pronouns can be used to clarify the noun.
mysu mas said cat (i.e. the cat we were just talking about)
mysu nas this cat
mysu sas that cat
The +0.5 forms can also be used like this.
mysu masta said other cat (i.e. the other cat we were just talking about)
mysu nasta this other cat
mysu sasta that other cat