What the vomiting means for a 9‑lb pregnant queen
Your queen is only 9 lb, and the moment she licked a pool‑chlorine tablet her mouth and throat were exposed to a powerful oxidizer. Calcium hypochlorite can cause immediate chemical burns, which is why you are seeing foamy drool and repeated vomiting within minutes of exposure. The irritation also spreads to the esophagus and stomach, leading to further nausea and possible abdominal pain. Because she is pregnant, any toxin that crosses the placental barrier can affect the developing kittens, making the situation even more serious. She also may develop a sore throat that makes her reluctant to drink.
Chemical burns in the gastrointestinal tract can progress quickly, especially in a small animal. Within the first hour the tablet may continue to release chlorine gas and hypochlorous acid, both of which can worsen irritation and lead to systemic absorption. A pregnant cat’s metabolism is already altered, so the toxin may circulate faster and reach the fetuses. This rapid progression is why veterinarians consider any ingestion of chlorine tablets an emergency, regardless of the amount, and why prompt professional care is essential. The rapid chemical reaction can also irritate the eyes if the tablet contacts facial fur.
Why the first hour after licking a chlorine tablet is critical
You mentioned the licking occurred this morning, so we are likely still within that critical first hour window. During this period the tablet’s surface reacts with saliva, generating acidic compounds that can rapidly damage the oral mucosa and begin to seep into the stomach. The earlier the animal receives veterinary support, the better the chance to limit absorption and to manage pain. Even if the cat appears only mildly nauseated now, the underlying chemical injury may still be expanding unseen. If you notice a metallic taste on the cat’s breath, it signals ongoing mucosal damage.
In addition to vomiting, watch for excessive drooling, pawing at the mouth, or any signs of oral pain such as reluctance to eat. Respiratory changes like rapid, shallow breathing can indicate irritation of the airway, while lethargy or trembling may signal systemic toxicity. Blood in the vomit or black, tar‑like stools suggest more severe gastrointestinal damage. Because the cat is pregnant, any stressor can also trigger premature labor, so any sudden change in behavior should be reported immediately. Any sudden shivering or cold extremities should be reported as they may hint at circulatory compromise.
What to watch for over the next 6–12 hours
Even if the cat seems to settle after the initial vomiting, toxic effects can surface later as the chemical continues to be absorbed. Between six and twelve hours after exposure you might notice a return of nausea, decreased appetite, or a low‑grade fever as the body mounts an inflammatory response. Diarrhea, especially if it is watery or contains blood, is another red flag that the gastrointestinal lining is being compromised. Keep the cat in a quiet, well‑ventilated area and limit access to any additional chemicals. A mild increase in heart rate can accompany the stress response and should be noted.
Watch the breathing pattern closely; any increase in effort, wheezing, or a cough could mean the chlorine vapors have irritated the lower airway. Signs of pain such as hunching, vocalization when touched, or reluctance to move indicate that the esophagus or stomach may be ulcerated. If you notice any seizure‑like activity, sudden collapse, or a rapid change in heart rate, treat it as a life‑threatening emergency and seek an emergency veterinary clinic without delay. If the cat begins to pant excessively without exertion, it may indicate worsening respiratory irritation.
How to prepare for the veterinary call
Call your vet or an animal poison hotline now and tell them exactly what was eaten, how much, and how long ago. Take the wrapper or the ingredient list with you. Your vet will decide whether decontamination is needed. Never induce vomiting at home. When you speak with the professional, mention that the cat is pregnant, her weight is 9 lb, and that she has already vomited several times. This information helps the clinician gauge the severity and plan any necessary diagnostics or supportive care. Ask the clinician whether any blood work will be needed to assess organ function after exposure.
After the call, follow the clinic’s instructions precisely and arrange to bring the cat in as soon as possible, ideally within the next hour. In the meantime, keep her away from the pool area, store chlorine tablets in a locked container, and clean up any spilled pieces promptly. Observe her for any new signs and note the time they appear, as this timeline will be valuable to the veterinarian. Prompt professional treatment gives the best chance to protect both the queen and her unborn kittens. Consider keeping a pet‑safe lockbox for all chemicals to prevent future accidents.
The step-by-step response, from the first minute to the vet visit, is in our Pool Chlorine Tablet (Calcium Hypochlorite) Poisoning in Dogs and Cats emergency guide.