State by state and city by city, find your nearest dog and cat hospital or animal emergency clinic. For example:

Q: I'm looking for the cat hospital in Sheridan, WY
A: Simple! Just surf to: Small Animal Clinics > Wyoming > Sheridan  

Q: How can I find the cat doctor closest to me in Esko, MN]?
A: The "Kitty Dr." can be found here: Small Animal Clinics > Minnesota > Esko

Portland

Peetz Larry DVM, 1500 Sw 5th Ave, Portland, OR 97201; call: 503-390-5708; located in or near Multnomah county

Pierce Paige DVM, 9715 Sw Barbur Blvd, Portland, OR 97219; call: 503-246-3373; located in or near Multnomah county

Quirk Craig A DVM, 809 Se Powell Blvd, Portland, OR 97202; call: 503-232-3105; located in or near Multnomah county

Ricker Stephanie DVM, 7851 Se King Rd, Portland, OR 97222; call: 503-771-0857; located in or near Clackamas county

Scott Rebeca DVM, 2009 N Killingsworth St, Portland, OR 97217; call: 503-283-0753; located in or near Multnomah county

Sorrento Animal Hospital, 12730 Sw North Dakota St, Portland, OR 97223; call: 503-524-5029; located in or near Washington county

Sunset Animal Clinic, 14740 NW Cornell Road, Suite 20, Portland, OR 97229; call: 503-690-8249; located in or near Washington county

Tulacz Paul W DVM, 1755 Sw Madison St, Portland, OR 97205; call: 503-228-5256; located in or near Multnomah county

Ulbrich Bob Vmd, 11505 Sw Pacific Hwy Ste D, Portland, OR 97223; call: 503-293-6666; located in or near Washington county

Ward Robert B DVM, 3565 Ne Sandy Blvd, Portland, OR 97232; call: 503-234-9229; located in or near Multnomah county

White Connie N DVM, 5055 Ne Fremont St, Portland, OR 97213; call: 503-282-0991; located in or near Multnomah county

Zehendner S Michael DVM, 11016 Ne Sandy Blvd, Portland, OR 97220; call: 503-253-7977; located in or near Multnomah county