Beat me to it. Lol.
"He cares only about his cat" is also correct, but marked as wrong here. Please fix!
Not his owl???
anyone hear something wrong with zhi3?
You're right. It doesn't sound like the correct tone.
Yeah, so 3rd tones are commonly not fully voiced (the rising portion is omitted) when mid-sentence. 3rd tones are only fully voiced for emphasis or when ending a thought.
他的猫 is ambiguous in number, so "cat" or "cats" is correct.
The lesson should emphasize that 他只猫 always means one, so only "cat" is correct.
This is a really dorky statement.