I really cannot tell whether my cat understands the difference
between, "No, not right now," and "I don't know what you're asking
for." Which means I can't tell the difference between her "Oh
c'mon, pleeeeease?" and her "Let me repeat that because I don't
think you heard me."
Some interspecies communication is very clear; some ... isn't.
Perrine does still have the problem of saying, "I want" without
indicating the direct object, but she's learned to be clear about a
few things. Most emphatically, when she wants me to brush her.
(Though I'm not certain how often it's because she really wants the
brush in particular, and how often she just wants attention and
knows that asking to be brushed is one of the clearest ways to ask
for attention.)
When I got home from rehearsal last night, she was quite vocal,
uttering high-pitched squeaks. I'm pretty sure she was indicating
how distressed she had been that I'd left, and how relieved she was
at my retutn (there was body language to go with the vocalisations).
The last time I'd gone out I wound up staying away a few days longer
than intended, and that had her quite upset. I wonder how long she's
going to keep doing this "I was so worried how dare you go away thank
God you're home" thing for outings of a mere few hours.