Venom and poison.Many animals can produce actual poisons and venoms, substances, which, even in very small amounts, can kill, cripple or otherwise harm other animals. The ability to produce toxins has been developed in all the major animal groups, except for the birds, but in reality, only few of the animals that use chemical weapons […]
Where?
The individual species are not equally frequent everywhere. Some are mostly found inside the house while others are mostly found outside. These are mainly troublesome indoors: Head lice, body lice, pubic lice, bedbugs, the masked hunter, larder beetle larvae, stable flies, human fleas, cat fleas, dog fleas, brown dog tick, pigeon mites, mites on birds, […]
Frequency
We know from the letters sent to the Danish National Pest Infestation Laboratory, at what time of the year each animal is causing problems. Fig. l shows that many of the pests are mainly linked to the warm season but also that some animals (dogs fur mites, itch mites and head lice) is apparently most […]
Unease about small animals
All birds and mammals have different forms of inherited behavior patterns that are designed to keep harmful insects at bay. When we slap animals that crawl on our neck out of reflex, without assessing whether it can sting or bite, it is undoubtedly an innate reaction. Many people look at small animals of any kind […]
Introduction
These days, there is an eager debate about whether or not there was room for all the animals on Noah’s Ark. We will not interfere in the scholarly debate but simply point out that there indeed exists a very large number of animal species. Today, roughly one million different animals are known, and studies of […]
- « Previous Page
- 1
- …
- 5
- 6
- 7