4. animal rights

2. - a person who illegally catches and kills birds, animals, or fish
5. - a glass tank or plastic container in which fish and other water creatures are kept
9. cruelty - behavior that causes suffering to animals, such as beating, neglect, or abandonment
10. - the act of leaving something permanently
15. - the state of being kept in a confined space and not being free
17. - to force an animal to eat and drink quickly by putting food into its mouth
18. - the use of something in a way that helps you unfairly
19. - to train a wild animal to obey you and stay calm when it is with people
20. - a person who moves animals or goods illegally from one country to another

1. - the protection of natural animals to prevent them from disappearing
3. loss - when the environment of a species is destroyed or altered, making it impossible for the species to survive
4. down - to kill an animal that is old or sick
6. rights organization - a group that works to protect animals from cruelty
7. - to keep a person or animal in a small or closed space
8. farming - a system of keeping animals in cages or pens in a small area to produce food
11. shelter - a place where homeless, lost, or abandoned animals are cared for
12. breeding - the process of breeding animals in human-controlled environments, such as wildlife reserves and zoos, to prevent species from becoming extinct
13. - to take someone else’s child into your home and legally become their parent; to take responsibility for keeping and caring for an animal that has been left alone
14. animal - an animal that is used for scientific experiments in a lab, including mice, rabbits, and guinea pigs
16. - a state of suffering and death caused by lack of food