Celia Haddon - Cat Expert

Understanding animals through their behaviour


A frog purring away surrounded by yelping toads. c. Celia Haddon

Normally when frogs and toads share the same pond, their mating occurs at different times. However, as the photo shows, occasionally a late coming frog (the one with the white throat) may turn up on the toad dating scene. You may see them trying to mate each other but the union will be sterile. Horny male toads and frogs also sometimes latch onto big goldfish.  Most fish will survive this, unless the frog happens to clasp their gills.  If a male toad clasps another male it makes a release call, a kind of squeak, which tells the mating toad to let go (Wells 1977) As fishes don’t make this noise, they continue holding on.

When two species share a pond, female frogs, that are clasped by a male of the wrong species, are not entirely helpless. They may react by either refusing to release the eggs, or releasing just a tiny amount so as to get the male off their backs – literally (Hettewey et al., 2009)


Hettyey, A., Baksay S., Vagi, B. & Hoi, H., (2009) ‘Counterstrategies by female frogs to sexual coercion by heterospecifics,’ Animal Behaviour, 78, 1365–1372

Wells, K. D., (1997), ‘The social behaviour of anuran amphibians,’ Animal Behaviour, 25, 666-693


These notes are my copyright. I am also usually happy to have the exact words reproduced on websites, in return for a link, my name, and if permission is asked beforehand. I like to check the websites where it might be used. Email me via this website for permission which will usually be given. Organisations wishing to use them in print should contact me via this website. Copyright © 2007 Celia Haddon. All Rights Reserved.

Safety notice.

All normal safety precautions should be taken when dealing with animals. The advice in this section should be taken only at the owner’s own risk. All sick animals should be seen by a vet.

General advice of the kind found in this website is no substitute for an individual consultation with a vet or qualified behaviourist working on a vet’s referral.

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