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Portland pet hazards, month by month

Seven things send Portland dogs and cats to a veterinarian every year, and most of them keep a calendar. Here is what to watch for and when.

When does each hazard show up?

The highlighted column is this month.

Seasonal hazards for Portland dogs and cats, by month
HazardJanFebMarAprMayJunJulAugSepOctNovDec
Raw salmon and troutDogsSeptemberOctoberNovemberDecember
Foxtails and grass seedsDogsJuneJulyAugustSeptember
Wild mushroomsDogsOctoberNovemberDecember
River algaeDogsJulyAugustSeptember
LiliesCatsMarchAprilMay
AntifreezeDogs and catsJanuaryFebruaryNovemberDecember
FleasDogs and catsJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember

What does each one look like?

The colored label is the speed: go to the emergency hospital, call us today, or book a visit this week.

An illustration of raw salmon and trout

Raw salmon and trout

Call us todaySeptember to DecemberDogs

What you see
Vomiting, fever and swollen glands within six days of eating raw fish from a river or a cooler.
What to do
Call us the day it happens. Treated early with an antibiotic and a wormer, most dogs improve within two days. Without treatment, nine in ten sick dogs die.

Fall is when the fish run and when carcasses wash up on the banks of the Willamette, the Clackamas and the Sandy. We wrote a full page on salmon poisoning in dogs.

An illustration of foxtails and grass seeds

Foxtails and grass seeds

Call us todayJune to SeptemberDogs

What you see
Sudden head shaking, sneezing fits, or licking at one paw after a walk through dry grass.
What to do
Call the same day. The barbed seed only travels one way, and it has to be found and removed.

Check ears, between the toes and under the collar after every summer walk. Dogs with long coats and floppy ears pick up the most.

An illustration of wild mushrooms

Wild mushrooms

Go nowOctober to DecemberDogs

What you see
Drooling, vomiting or wobbling after time in the yard or on a trail once the fall rains start.
What to do
Go to the emergency hospital and bring a photo of the mushroom. Some kinds that grow in the Northwest damage the liver.

No one can tell a safe mushroom from a dangerous one by looking at a chewed stem. Clear your yard after the first week of rain and keep dogs leashed under big trees.

River algae

Go nowJuly to SeptemberDogs

What you see
Green scum or paint like streaks on slow water. The Willamette around Ross Island gets advisories in late summer.
What to do
Keep dogs out of the water during an advisory. If your dog swam or drank and seems weak or is vomiting, go to the emergency hospital.

The Oregon Health Authority posts advisories by water body. When the water looks green and still, pick a different swim spot that day.

An illustration of lilies

Lilies

Go nowMarch to MayCats

What you see
A bouquet or a potted Easter lily in the house. Every part is toxic to cats, including the pollen and the vase water.
What to do
Go to the emergency hospital right away, even if your cat seems fine. Treatment in the first hours protects the kidneys.

Spring bouquets are the usual source. If you live with a cat, ask for a bouquet with no lilies, and check the label on any gift plant.

Antifreeze

Go nowNovember to FebruaryDogs and cats

What you see
A sweet tasting puddle under a car in the driveway or garage during the cold months.
What to do
Go to the emergency hospital right away. A very small amount is dangerous to a cat or a dog.

Wipe up drips, store the jug closed and off the floor, and keep cats out of the garage when you top up the car.

Fleas

Book this weekAll yearDogs and cats

What you see
Scratching, scabs along the back, or black specks in the coat. Portland winters are mild enough for fleas to live all year.
What to do
Keep prevention going every month, including for indoor cats. Ask us which product fits your pet.

One missed month in winter is usually how a spring flea problem starts. Some dog flea products are toxic to cats, so check the label before you share.

General guidance from a neighborhood clinic. It cannot examine your pet. For a possible poisoning, the ASPCA Animal Poison Control Center answers at (888) 426-4435, and a fee may apply.

Portland pet hazards, answered

What is the most dangerous season for Portland dogs?

Fall. Salmon and trout are running, mushrooms come up with the first rain, and antifreeze shows up in driveways. Summer is second, for foxtails and river algae.

How dangerous are lilies for cats?

Very. Every part of a true lily or a daylily is toxic to cats, including the pollen and the water in the vase. A cat that chewed or licked any of it needs an emergency hospital right away.

Do Portland pets need flea prevention in winter?

Yes. Winters here are mild and homes are warm, so fleas keep breeding. A missed winter month is usually where a spring problem begins.

Is the Willamette safe for dogs to swim in?

Check before you go. In late summer, slow water around Ross Island can grow toxic algae, and the Oregon Health Authority posts advisories by water body. Skip the swim when the water is green or scummy.

Request a visit

Tell us who is coming and why, and the front desk calls back within two business hours to set a time.

(503) 555-0146

Monday to Friday 7:30 AM to 6 PM, Saturday 9 AM to 2 PM. After hours, call DoveLewis at (503) 228-7281.

Who is the visit for?

If your pet needs to be seen today, please call. Leave medical history and card numbers out of this form. See the privacy page.

This is a demo site, so nothing was sent. On a live Fernhollow site, the front desk calls back within two business hours to confirm a time.