"Collection Plate" joke

Every Sunday, a little old lady placed $1,000 in the collection plate.
It went on for weeks until the priest, overcome with curiosity,
approached
her.
"My dear, I couldn't help but notice that you put $1,000 a week in the
collection plate," he stated.
"Why yes," she replied, "every week my son sends me money, and what I
don't need, I give to the church."
"That's wonderful, but how much does he send you?" the priest asked.
"He sends me $2,000 every week," she replied proudly.
"Your son must be very successful," said the priest. "May I ask what
does
he do for a living?
"He is a veterinarian," she answered.
"That is a very honourable profession," the priest assured her. "Where
does
he practice?"
"Well," she replied, "he has one cat house in Kansas City and another in
New Orleans."