**Explanation:**

**Dinosaurs** are not a suitable choice for keeping as pets for several reasons. Here's a detailed explanation:

1. **Extinction:** Dinosaurs went extinct millions of years ago, so it is impossible to find live dinosaurs today. They existed during the Mesozoic Era and became extinct around 65 million years ago. Therefore, it is not possible to keep dinosaurs as pets because they no longer exist.

2. **Size and Habitat:** Dinosaurs were massive creatures that varied in size, from small to enormous. Their sizes ranged from a few feet to over 100 feet long. The sheer size of dinosaurs makes it impractical to keep them as pets due to the space requirements. Dinosaurs had specific habitats and environments they lived in, such as forests, deserts, or water bodies, which would be impossible to replicate in a domestic setting.

3. **Feeding and Care:** Dinosaurs had specific dietary needs that would be challenging to fulfill in a domestic setting. They were carnivores, herbivores, or omnivores, depending on the species. Providing the appropriate diet for a dinosaur would be extremely difficult and potentially dangerous, as some dinosaurs were apex predators. Additionally, the care requirements for such large and complex creatures would be beyond the capabilities of an average person.

4. **Legal and Ethical Considerations:** Even if it were somehow possible to resurrect dinosaurs through advanced technologies, keeping them as pets would raise significant legal and ethical concerns. Governments and international laws regulate the ownership and handling of animals, especially those considered endangered or extinct. Dinosaurs, being extinct, would fall under these categories and would likely be protected under various conservation laws.

In conclusion, while dogs, cats, and camels can be kept as pets, dinosaurs cannot be considered as a suitable choice for several reasons, including their extinction, size and habitat requirements, feeding and care needs, and legal and ethical considerations.