What's Lennie's explanation for why he likes rabbits? How does Curley's Wife respond?

From the text:

"She asked, "What makes you so nuts about rabbits?"

Lennie had to think carefully before he could come to a conclusion. He moved cautiously close to her, until he was right against her. "I like to pet nice things. Once at a fair I seen some of them long-hair rabbits. An' they was nice, you bet. Sometimes I've even pet mice, but not when I couldn't get nothing better."

Curley's wife moved away from him a little. "I think you're nuts,"

she said.