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  you are in: ADVICE > FAQs > FROGS AND TOADS > SWOLLEN ANIMAL



Advice and Resources

Frequently Asked Questions about...

Frogs and toads

I've found a swollen frog/toad, what's wrong with it?

Quick answer
Swollen individuals could be carrying eggs, have an infection that's caused them to take on water
or have an intestinal blockage.

Further information
Female amphibians become noticeably swollen with eggs in spring. This is natural and they normally return to a smaller size once they have spawned. Occasionally, a  bloated amphibian could be a female that is egg-bound - where eggs get stuck in the reproductive system. Try contacting a vet about this as they may be able to release the eggs; most vets treat wild animals for free but do ring to check first, also many may not be confident treating amphibians.

A swollen amphibian may also be indicative of a blockage in the gut. Unless a vet is able to help with this (which may not be possible) the outcome is, unfortunately, not good for these animals.

Sometimes Froglife receives reports of frogs (or other amphibians) that become noticeably bloated. The bloating is apparent all over body of the frog, rather that only the belly (which indicates the animal is carrying eggs or has a digestive problem). This unusual bloating is thought to be related to a hormonal imbalance which pulls water into the frog's body causing it to swell. Symptoms often appear to subside over time but, again, a vet may be able to help by draining the fluid.

Toads also inflate themselves as a defence mechanism (to make them look too large to eat). They will 'deflate' when the perceived threat has passed.

If you have found a bloated amphibian that is dead this is likely to have occurred after death (especially if it died in the pond) rather than being a symptom of something that killed it.

More on...
O Find my nearest vet.
O Find a wildlife hospital.
O Amphibian disease.