Why a 30 kg dog vomiting after lily exposure needs blood work
While dogs don't process lily toxins the same way cats do, the vomiting you're seeing suggests irritation or early systemic effects. The vet will prioritize checking kidney values through blood chemistry since lilies can cause subtle damage before obvious symptoms appear. Your dog's size offers some protection against severe poisoning from a few leaves, but not complete immunity.
Expect the clinic to administer IV fluids to support kidney function and flush out toxins, along with medications to control nausea. They may recommend keeping your dog overnight for observation if blood work shows any elevation in kidney markers. At home, track water intake and urine output closely for the next 72 hours.
The first 48 hours after lily ingestion in a large dog
Your dog's vomiting this morning means the toxins have already started affecting the digestive tract. Watch for diarrhea, excessive drooling, or refusal to eat—these would signal worsening irritation. Unlike cats, dogs may show more gastrointestinal upset than kidney symptoms initially, but both systems need monitoring.
Even if blood work comes back normal today, ask about repeating tests in 2-3 days. Lily toxins can sometimes cause delayed kidney effects that don't show up immediately. Keep all lily plants out of reach going forward, as repeated exposures could have cumulative effects on your dog's kidneys over time.
How to monitor a dog after lily exposure at home
After the vet visit, create a quiet recovery space with easy access to fresh water. Measure how much your dog drinks—sudden increases or decreases could indicate kidney stress. Note urine color and frequency; reddish or very concentrated urine requires immediate callback to the vet.
Offer small, bland meals if your dog shows interest in food, but don't force eating. The anti-nausea medication given at the clinic should prevent further vomiting, but if it continues or your dog becomes lethargic, seek emergency care. Save a sample of any plant material your dog chewed for identification.
When lily exposure becomes a true emergency for dogs
Though rare in larger dogs, lily poisoning can escalate quickly if massive amounts were consumed. Seek immediate help if you notice tremors, loss of coordination, or collapse. These neurological signs suggest either an unusually severe reaction or possible co-ingestion of other garden toxins.
For your 30 kg dog, the bigger concern is potential kidney damage developing over several days. Follow all recommended recheck appointments—what seems like mild vomiting today could progress to serious kidney issues by tomorrow. Document any changes in behavior or bathroom habits with timestamps to help the vet track progression.
The step-by-step response, from the first minute to the vet visit, is in our Safe and Toxic Flowers for Dogs and Cats at Home emergency guide.