My pet ate something it should not have — how do I tell whether it is poisoning?

My pet ate something it should not have — how do I tell whether it is poisoning?

Identify the species first. The same symptom is handled differently in different species, and copying another species' handling can do harm. Covered here: poultry, reptiles and amphibians, dogs, cats, farm animals and horses, wild and working animals, fish, fish and invertebrates, birds.

Applies to all species

Signs: Altered consciousness, coma, cannot be roused, limp and unresponsive

• Keep the airway clear, keep the animal warm, transport it steadily
• Never force food or water into the mouth (risk of aspiration)

Signs: After swallowing a linear object (sewing thread, hair tie, dental floss), a strand shows from the mouth or the anus

• Seek veterinary care immediately
• Never pull on the exposed strand yourself

Signs: Suspected contact with, or ingestion of, a poison, an unknown medicine, or an unknown plant

• Contact a veterinarian or a poison hotline immediately, and bring the packaging and any remains
• Never induce vomiting yourself

Signs: Unexplained bleeding spots (bruising) on skin or mucous membranes, a nosebleed that will not stop, wounds that keep oozing

• Seek veterinary care immediately and bring any suspicious bait packaging
• Avoid anything that could cause bleeding (such as clipping and debriding at home)

Signs: After an insect bite, bee sting or venomous snakebite, the site swells rapidly and the animal weakens and collapses quickly

• Keep the affected part below heart level, limit movement, get to a veterinarian immediately
• Never apply a tourniquet, cut the wound open, or attempt suction by mouth

Signs: Lilies (any variety, any part, including pollen and vase water) — acute renal tubular necrosis specific to cats; acetaminophen/paracetamol (cats are congenitally short of hepatic glucuronidation capacity, so a very small amount can be lethal); permethrin spot-on products made for dogs (cats metab

• Cats have a congenital defect in a hepatic detoxification pathway (glucuronidation), which makes many substances that are "safe for dogs or people" lethal poisons for cats

Signs: Chocolate, caffeinated food, rodenticide (also lethal to other pet rodents), some indoor foliage plants, tobacco products and e-cigarette liquid

• ❗ [Applies across species] No direct source for handling this species was found at this level. Do not copy what is done for other species — contact a veterinarian familiar with this species right away.

Signs: Most common in dogs and cats

• ❗ [Applies across species] No direct source for handling this species was found at this level. Do not copy what is done for other species — contact a veterinarian familiar with this species right away.

Signs: Dogs and cats (epilepsy, low blood calcium, poisoning), ferrets (low blood sugar), birds (hypocalcemia syndrome, seen especially in African grey parrots)

• ❗ [Applies across species] No direct source for handling this species was found at this level. Do not copy what is done for other species — contact a veterinarian familiar with this species right away.

Signs: Dogs and cats (suspected poisoning, for example pyrethroids or snail bait), reptiles

Signs: Applies to all species

• ❗ [Applies across species] No direct source for handling this species was found at this level. Do not copy what is done for other species — contact a veterinarian familiar with this species right away.

Signs: Dogs and cats (coagulation disorders, platelet disease, rodenticide poisoning)

• ❗ [Applies across species] No direct source for handling this species was found at this level. Do not copy what is done for other species — contact a veterinarian familiar with this species right away.

Poultry

Signs: Ingestion of botulinum toxin from stagnant or rotting water

• [Poultry] Keep water sources clean and avoid stagnant, rotting standing water

Signs: Sudden inability to stand, or progressive limb weakness and paralysis (suspected botulism); several birds in the flock falling ill or dying within a short period; severe respiratory distress; complete cessation of eating and drinking; heavy eye and nasal discharge with depression; neurological signs (opisthotonos, convulsions). If any one of these appears, seek veterinary care or contact the poultry health authority immediately.

• ❗ [Poultry] No direct source for handling this species was found at this level. Do not copy what is done for other species — contact a veterinarian familiar with this species right away.

Signs: Same as the duck group (stagnant or rotting water)

Signs: Sudden wing deformity with reduced activity (suspected angel wing together with other problems); sudden inability to stand or progressive muscle weakness (suspected botulism); several birds in the flock falling ill or dying within a short period; severe respiratory distress; complete cessation of eating. If any one of these appears, seek veterinary care or contact the poultry health authority immediately. **Also note: injuries to people caused by aggressive geese

• [Poultry] Also note: injuries to people caused by aggressive geese (especially eye or facial injuries in children) are a personal-safety emergency and need immediate medical attention. That is outside the animal-medicine scope of this table, but keepers should be aware of the risk

Reptiles and amphibians

Signs: Substrate ingestion, insufficient fiber

Signs: Substrate ingestion or insufficient fiber

Signs: Substrate ingestion (fine sand or small particles)

• [Reptiles and amphibians] Avoid substrates that are easily swallowed

Signs: Substrate ingestion

• [Reptiles and amphibians] Avoid substrates that are easily swallowed

Signs: Substrate ingestion, or prey items that are too large

Signs: Substrate ingestion (high risk in horned frogs, which swallow whole mouthfuls)

• [Reptiles and amphibians] Avoid substrates that are easily swallowed

Signs: Substrate ingestion (high risk in axolotls)

Dogs

Signs: Usually autoimmune thyroid atrophy or lymphocytic thyroiditis (the opposite of cats — in dogs the dominant problem is an underactive thyroid)

• [Dogs] In high-risk breeds (golden retriever, Doberman, beagle, West Highland white terrier and others), do not dismiss "getting fatter and lazier" as aging

Signs: In dogs it is usually insulin-dependent (loss of pancreatic beta cells); risk factors include pancreatitis, Cushing's disease, hormones during the heat cycle, obesity, and certain breeds (schnauzer, Samoyed and others)

• [Dogs] Manage body weight, avoid high-fat diets and pancreatitis, see a veterinarian early if drinking and urination increase, and return for regular adjustment

Signs: Poisoning

• [Dogs] Bring the packaging, record the time and an estimate of the amount, and keep any vomit

Signs: Anemia, hemolysis, hepatobiliary disease, coagulation abnormalities (including rodenticide poisoning), low platelets

Signs: Eggs in feces mature in soil and are then swallowed by mouth

Signs: A child swallows a flea carrying tapeworm

Signs: Swallowing eggs (from dog hair or the environment); dogs are infected by eating raw offal or prey

Signs: Central nervous system depression plus low blood sugar plus acidosis

Cats

Signs: Acute renal tubular necrosis specific to cats

Signs: Diabetes mellitus

• [Cats] Do not judge on a single high blood glucose reading on your own

Signs: Neurological emergency, poisoning or high blood pressure

Signs: *Toxocara cati*

Signs: *Rickettsia* species, *Dipylidium caninum*

Farm animals and horses

Signs: Excess grain or starch (linked to hindgut acidosis), obesity, endocrine disease (PPID, equine metabolic syndrome EMS), postpartum retained placenta with sepsis, long-term overloading

• [Farm animals and horses] Control body weight and concentrate feed, manage endocrine disease, avoid overgrazing lush spring grass

Signs: Excess grain concentrate, or changing feed too fast

Signs: *Clostridium perfringens* toxin, often linked to abrupt feed changes or overeating

• [Farm animals and horses] Vaccinate and avoid abrupt feed changes

Signs: Ingestion of high-copper minerals, or an error in the feed formulation

Signs: Large numbers of dead or convulsing bees at the hive entrance (suspect pesticide poisoning; report to the local agriculture or beekeeping authority and stay away from possible contamination sources); widespread mottling, sunken and perforated brood comb with a foul smell (suspect American foulbrood; report to the beekeeping authority and do not handle it yourself, because of the spread risk); colony size dropping sharply outside the overwintering season while honey and pollen stores are still ample

• [Farm animals and horses] Large numbers of dead or convulsing bees at the hive entrance (suspect pesticide poisoning; report to the local agriculture or beekeeping authority and stay away from possible contamination sources)
• [Farm animals and horses] Widespread mottling, sunken and perforated brood comb with a foul smell (suspect American foulbrood; report to the beekeeping authority and do not handle it yourself, because of the spread risk)

Wild and working animals

Signs: A

This content is for education only and cannot replace diagnosis or prescription by a licensed veterinarian. In an emergency, seek veterinary care immediately.

Fish

Signs: Low dissolved oxygen, or ammonia or nitrite poisoning

• [Fish] Do a large water change immediately (dechlorinated water) and increase aeration, pause feeding, and test ammonia and nitrite with a kit at the same time

Signs: New tank syndrome or ammonia poisoning, sharp temperature swings, chemical contamination

• [Fish] Do a large water change immediately to dilute the toxin, test the water, and if needed contact an aquarium professional or a veterinarian experienced with aquatics

Fish and invertebrates

Signs: New tank syndrome or ammonia poisoning

• [Fish and invertebrates] Cycle the water before adding fish, and increase stocking gradually

Signs: A surface film can let chemicals dissolve into the water and cause poisoning

Signs: Copper toxicity

• [Fish and invertebrates] Never use copper-containing medications in an invertebrate tank

Signs: Large numbers of animals dying at the same time within a short period (often points to copper toxicity or a sharp change in water quality

Signs: Dechlorinator; heavy metals are not a routine test item, but stay alert in premises with old plumbing

• [Fish and invertebrates] Never use copper-containing medications in a tank housing invertebrates (cross-reference: supplementary column B, section 8.4)

Birds

Signs: Chewing lead-based paint, galvanized cage mesh, or metal toys

Signs: Chewing lead-containing objects or galvanized metal (large parrots bite hard, so exposure risk is higher)

Limits of this content

This article reorganizes veterinary encyclopedia material by species into a triage guide, with the source marked on every entry (51 anchors in total; see the evidence chain). The sources listed at the end are the authoritative references cited by the chapters covered here; the correspondence is at chapter level, which does not mean every sentence traces back to that particular source. This content is for education only and cannot replace diagnosis or prescription by a licensed veterinarian. In an emergency, seek veterinary care immediately. Sources are marked entry by entry from the encyclopedia material (see the evidence chain at the end); the text has not been clinically reviewed by a named veterinarian.