8 Week Old Toy Size Chihuahuas. They're 8 weeks old 9DOB: November 24, 2019 ), and they're already eating hard puppy food. They're almost entirely potty trained. They're ready for their sweet loving home forever. They all have lovely, cuddly, playful, and funny behaviors. Both mom and dad are both full blooded Chihuahuas. Asking $350.00 rehoming fee.