Do you ever feel “stuck for words” when you encounter the topic of Animals in your IELTS exam? Many candidates find this a “tough nut to crack” in both Speaking and Writing. It’s not that we don’t love animals, but rather that we lack the sophisticated vocabulary to express their importance beyond just… being pets. If your argument is simply that “animals are cute and should be protected,” it will be difficult to score above a 6.5.
In this article, Ms. Nguyen Huong Giang – an 8.5 IELTS instructor at ECE – will guide you on how to approach this topic from a more scientific and persuasive perspective: from their medical value to ecological balance. Let’s dive in!

Topic Analysis & Critical Thinking
Prompt:
Many animals are endangered. Some people argue that we should only protect animals that are useful to humans. To what extent do you agree or disagree?
(Many animal species are under threat. Some argue that we should only protect those that are useful to humans. To what extent do you agree or disagree?)
Band 8.5 Argumentation Strategy:
Instead of emotionally opposing the prompt, we will follow this logical roadmap:
1. Concession: Acknowledge the validity of the opposing view. Focus on “The usefulness of certain endangered species” (e.g., in medicine).
2. Counter-argument: Expose the flaw in the above view by broadening the scope:
- The interdependence of ecosystems.
- The potential future value of species currently deemed “useless.”
High-scoring Vocabulary for Environment & Animals
To add depth to your writing, you should use these collocations accurately:
| Vocabulary / Collocation | Meaning |
| Practical purposes | Practical purposes |
| Medically valuable | Medically valuable |
| Ecological balance | Ecological balance |
| Equilibrium | Equilibrium (a stable state of a system) |
| Habitat | Natural environment of an animal |
| Degradation | Environmental decline |
| Food security | Food security |
| Climate stability | Climate stability |
| Biological archive | Biological archive |
| Genetic properties | Genetic characteristics |
Sample Essay: IELTS Writing Task 2 (Animals)
Here is how Ms. Huong Giang applies the vocabulary above to answer the question persuasively.
Regarding the alarming rate of species extinction, some argue that conservation efforts should focus only on animals that are directly useful to humans. While it is reasonable to prioritize certain species for practical purposes, I strongly disagree with the idea that protection should be limited in this way. In my view, both medically valuable animals and other endangered species must be preserved to maintain ecological balance and safeguard long-term human interests.
Admittedly, protecting animals that are useful to humans, particularly in medicine, plays an important role. Many modern drugs are derived from compounds found in animals, such as snake venom used in blood pressure treatments or marine organisms that contribute to cancer research. From this standpoint, focusing on species that offer a clear return for human health and the economy appears to be a rational response to a budget-constrained environment.
However, this narrow focus overlooks the fundamental complexity of the natural world. Beyond immediate human utility, the survival of the wider animal kingdom is essential for maintaining the delicate equilibrium of global ecosystems. Every organism, regardless of its perceived value, performs a specific function within its habitat, such as nutrient cycling, seed dispersal, or the regulation of prey populations. The loss of a single species can precipitate a chain reaction that may lead to the total degradation of an environment, subsequently threatening human food security and climate stability. Furthermore, biodiversity serves as a critical biological archive, in which many species currently deemed insignificant may possess unique genetic properties essential for addressing future, as yet unknown, global challenges.
In conclusion, while conserving animals with clear medicinal or economic value is necessary, limiting protection to such species is both ethically and environmentally flawed. A comprehensive conservation approach that values all endangered animals is essential for preserving biodiversity, maintaining ecosystem balance, and ensuring long-term benefits for humanity itself.
As you can see, the key to this essay lies in shifting your perspective: from protecting animals out of compassion to protecting them for the survival of the ecosystem.
When you incorporate concepts like interdependence or biological archive, your arguments become much more rigorous and compelling. We hope this analysis and sample essay help you approach the Animal topic with greater ease. Happy studying!




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