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Topics containing the search term "defences" are:

1. Foregut fermentation in mammals
   Foregut fermentation is best known from the ruminants, such as cattle, deer and giraffes, that regurgitate and rechew their food to aid microbial digestion. However, they are not the only mammals to have evolved this digestive strategy...

2. Brood parasitism in cuckoos and other birds
   Obligate brood parasitism has evolved several times independently in birds. Apart from the cuckoos, it can be found in four other, only distantly related families.

3. Agriculture in beetles
   Think of weevils and most likely you'll think of spoiled food. But some weevils have turned to farming...

4. Foam nests in animals
   Nests crop up everywhere, but one made out of foam? Might not sound like a great idea, but it is. And no surprise, it has evolved several times...

5. Pufferfish (and inflation)
   Pufferfish are some of the most extraordinary fish to have evolved, especially because of their capacity to swallow water and inflate themselves to something like a football. Not only that but some representatives can be deadly to the unwary diner...

6. Mimicry in fungi
   Insects pollinating flowers are a familiar sight. But what happens when the "flower" is actually a fungus? Still "pollination", but now it is fungal spores. Read on to learn more about the fungi that mimic flowers...

7. Wire plants, moas and elephant birds
   Madagascar and New Zealand were once home to giant herbivorous birds. And the plants have not forgotten...    

8. Enzymes: convergence on active sites and reaction types
   Enzymes make the world go round, each an evolutionary marvel - and convergent.

9. Gut fermentation in herbivorous animals
   Ever tried eating a newspaper? Don't. Plant cell walls contain cellulose, which is notoriously difficult to digest. Considering that all vertebrates lack the enzymes to attack this polysaccharide, how do so many of them manage to survive on a plant diet?