I would suggest getting him in for supportive care just as the poison site you copied suggests.
He's a little guy and if he ate some macadamia nuts fluids could help him get rid of the toxins more rapidly and keep him more comfortable.
This site may help you locate an emergency vet if you need one
http://www.vetlocator.com/hotline.php
Or
You can call the Animal Poison Center. The phone # for this service that provides nationwide immediate help is 1-800-213-6680.
There is a one time fee per case.
or
National Animal Poison Control Center : 1 XXX-XXX-XXXX . This 24-hour manned emergency number is sponsored in part by 36 different companies along with a charge for consultation.
They may direct you to local in person care though.
Hope this helps you!
Pet Health Care, Rescue,Train,Breed
30+yrs pet vet care & nursing, rescue, behavior & training, responsible breeding, small animal care