Dr. Alison: My dog has many wart-like growths on his skin that seem to be itchy.

What are these? -- George

George: These are generally tumors and not, in the strictest sense, warts, though the two can look very similar in their appearance.

They often are very simple to remove and do not pose a real health risk.

If the areas become itchy for your dog, they should be removed under anesthesia to give comfort.

Some of these areas never change and require little attention.

Have your vet look at them to determine if they are tumors and to assess the need for removal.

Dr. Alison: I recently acquired a chinchilla from my great-aunt. I am wondering about their baseline health information.

Can you help? -- Julie

Julie: Chinchillas require large spaces with multiple levels and ramps for their active and playful lifestyle.

Avoid wire and plastic in the chinchilla's living space.

They can be a hazard.

Bedding should be recycled paper or kiln-dried pine.

There are many unsafe materials sold for bedding, so use caution when purchasing.

A dust bath is a must.

These are available commercially, made from silver sand and Fuller's earth.

Dust baths usually are filled 2 to 4 inches deep and are offered daily for about 10 minutes.

These will allow the chinchillas to groom and clean themselves, keeping their skin and fur healthy.

Just as is the case with other rodents, a constant supply of hay, in addition to their pelleted diet, is needed to provide the necessary roughage.

Signs of illness in chinchillas can include inactivity, loss of appetite or weight, hunched posture, hair loss, diarrhea, drooling or trouble breathing.

Good luck with your new pet.

Some chinchillas can live as long as 20 years.

Johnson, DVM, is the owner of Pet Med Animal Hospital in Dubuque. You can e-mail her at ariley8387@aol.com.