Climbing Begonia Toxic?

Updated 2026-03-06| 5 min read| 4,790 found this helpful

Climbing Begonia is classified as non-toxic to cats, dogs, and horses per available toxicology data

No severe or lasting toxic effects are expected from accidental ingestion of small to moderate amounts of this plant

Excessive consumption may still cause mild, transient gastrointestinal upset in sensitive individuals or animals

FAQ

Is Climbing Begonia toxic to Humans?

No documented severe toxic effects; excessive ingestion may cause mild temporary nausea, stomach cramping, or loose stools in sensitive people (Non-toxic)

Is Climbing Begonia toxic to Cats?

No known toxic symptoms; very rare mild vomiting or soft stools may occur if very large quantities are eaten (Non-toxic)

Is Climbing Begonia toxic to Dogs?

No known toxic symptoms; rare mild gastrointestinal upset (soft stools, occasional vomiting) may occur with overconsumption (Non-toxic)

Is Climbing Begonia toxic to Horses?

No documented toxic effects; excessive ingestion may lead to temporary mild digestive discomfort with no lasting harm (Non-toxic)

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Toxicity Details

Humans

Non-toxic

No documented severe toxic effects; excessive ingestion may cause mild temporary nausea, stomach cramping, or loose stools in sensitive people

Cats

Non-toxic

No known toxic symptoms; very rare mild vomiting or soft stools may occur if very large quantities are eaten

Dogs

Non-toxic

No known toxic symptoms; rare mild gastrointestinal upset (soft stools, occasional vomiting) may occur with overconsumption

Horses

Non-toxic

No documented toxic effects; excessive ingestion may lead to temporary mild digestive discomfort with no lasting harm

Toxicity Snapshot

Toxic PartsNo plant parts are considered significantly toxic; all tissues carry minimal risk of adverse reaction for most species

Exposure RouteOral ingestion (most common exposure); no reported skin irritant effects for most individuals

Toxic CompoundsNo toxic chemical compounds of concern have been identified in this species to date

First Aid & Prevention

First 30 Minutes

• If small amounts are ingested, rinse mouth with clean water and monitor for any unexpected symptoms
• If large quantities are consumed, offer small sips of fresh water to dilute any mild irritant compounds
• Remove remaining plant material from reach to prevent further overconsumption

Contact Vet Immediately

• If your cat, dog, or horse exhibits persistent vomiting, diarrhea, or lethargy lasting over 24 hours after ingestion
• If the individual has a known history of severe plant allergies or unusual foliage sensitivity
• If you are uncertain the ingested plant is correctly identified as non-toxic Climbing Begonia

Prevention

• Confirm plant identification before bringing it into homes or pastures accessible to pets and livestock
• Discourage pets and small children from chewing on any houseplants, even non-toxic varieties, to avoid mild upset
• Store fertilizers or pesticides used on this plant separately to prevent unrelated toxic exposure

Treatment & Prognosis

• Provide supportive care (rest, fresh water, bland meals for 24-48 hours) for mild gastrointestinal upset
• Treat rare allergic reactions (rash, swelling) with antihistamines as directed by a healthcare provider or vet
• No specific antidote is required, as no severe toxic effects are associated with this species

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Professional Toxicology

Scientific NameCissus dicolor

AliasesRex Begonia

Toxicity Grade

HumansNon-toxic

CatsNon-toxic

DogsNon-toxic

HorsesNon-toxic

Target Organs

No specific organs are at risk of damage; very mild temporary gastrointestinal irritation may occur in sensitive individuals

Mechanism of Action

• No toxic mechanism has been identified, as the plant does not contain harmful concentrations of toxic compounds for assessed species

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Small mammals (rabbits, guinea pigs): No documented toxicity; excessive consumption may cause mild digestive upset similar to other non-toxic foliage

Pet birds: No known toxic effects; small amounts of foliage are considered safe as part of a varied diet

Reptiles: No reported adverse effects from consumption of small amounts as part of a balanced herbivorous diet

Confusion Risk

The following plants look similar and may be confused:

True Rex Begonia Begonia rex

Cissus dicolor is commonly misnamed Rex Begonia; true Rex Begonia belongs to the Begoniaceae family and may cause mild toxic effects if ingested, while Cissus dicolor is in Vitaceae. Key difference: Rex Begonia has asymmetrical, brightly patterned foliage and no vining growth habit

Grape Ivy Cissus alata

Both are vining Cissus genus plants in the Vitaceae family, making visual identification tricky. Grape Ivy has glossier, more rounded leaves compared to the elongated, purple-backed variegated foliage of Cissus dicolor

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Related Toxic Plants

Virginia Creeper

Parthenocissus quinquefolia

Moderate; contains oxalate crystals that cause mouth irritation and severe gastrointestinal upset if ingested

Wild Grape

Vitis riparia

High for dogs; fruit (grapes) can cause irreversible kidney failure in dogs, while foliage has lower toxic risk

Boston Ivy

Parthenocissus tricuspidata

Low; contains oxalate compounds that cause mild mouth, throat, and gastrointestinal irritation when consumed

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Data Sources

1. ASPCA Animal Poison Control

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.