PETS

1. WHAT / WHY

1.1. training

1.1.1. sport

1.1.2. tricks

1.2. working

1.2.1. transporting

1.2.2. chasing

1.2.3. hunting

1.2.4. guarding

1.2.5. guiding

1.2.6. Police dog (sniffling)

1.3. competitions

1.4. fun

1.5. love

1.6. beaty

1.7. hugging, fondling

1.8. against lonelyness, partner

1.9. entertainment

1.10. sound

1.11. bread,, business

1.12. watching

1.13. comfort

2. NUTRIATION

2.1. Water

2.2. Meat

2.3. Vegetable

2.4. grain

3. GROUPS

3.1. birds

3.1.1. dove

3.1.2. eagle

3.2. fish

3.2.1. (I don't know the translation)

3.3. mammals

3.3.1. dog

3.3.2. cat

3.3.3. horse

3.3.4. rabbit

3.4. insects / spider

3.5. reptiles

3.5.1. snake

4. WHERE

4.1. cage

4.2. hut

4.3. home

4.4. aquarium

4.5. terrarium