Thank GOD the chihuahua is NOT pregnant.
I've never been so relieved in my life. That's not an exaggeration.
I have been in touch with thecatneuterer, however.
These things take time... but I gather there are literally hundreds of cats needing homes. I shall be sending my CV in shortly. 
I might have to have the chihuahua for Xmas but please GOD the DH of my friend will lose his driving licence tomorrow so they can't go on a touring holiday.
(He admitted this by telling her: 'I ran across a pole in the dark when the dog jumped up'. She said, well that doesn't sound too bad. He said: 'The Pole screamed blue murder and court's on Monday.')