In some species of toads the fertilized 

 eggs ore carried about on the back of 

 the female until the tadpoles are able 

 to swim away. In other species the 

 male tangles the gelatinous string of 

 fertilized eggs around his body and 

 hind legs and carries the offspring 

 about until the tadpoles swim away. 

 The male of still other species of toads 

 carries the hatching eggs about in 

 his mouth 



American Museum of Natural History 



MOTHERING AMONG TOADS 



Among the reptiles and birds the fertilized egg begins to develop inside 

 the parent's body; and before the young embryo is removed, it is surrounded 

 by a mass of food material (the yolk and the white) and a protective shell. 



New York Zoological Society 



BREEDING HABITS OF SIAMESE FIGHTING FISH 



After building a bubble nest for the eggs, the male Siamese fish twists his body 

 around the body of the female, fertilizing the eggs as she discharges them. As the 

 eggs drop, both the male and the female take them in their mouths and place them 

 in the nest. The male then drives the female from the nest and guards the eggs until 

 they hatch 



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