Choose "a" or "an" and say the phrase with animal images.

Let me work through this step by step to determine whether to use "a" or "an" before each animal.

The rule is:
- Use "a" before words that start with a consonant sound
- Use "an" before words that start with a vowel sound (a, e, i, o, u)

Let me check each animal:

1. Dog - starts with "d" (consonant) → "a dog"
Cat - starts with "c" (consonant) → "a cat"

2. Camel - starts with "c" (consonant) → "a camel"
Elephant - starts with "e" (vowel) → "an elephant"

3. Octopus - starts with "o" (vowel) → "an octopus"
Frog - starts with "f" (consonant) → "a frog"

4. Fox - starts with "f" (consonant) → "a fox"
Rabbit - starts with "r" (consonant) → "a rabbit"

5. Owl - starts with "o" (vowel) → "an owl"
Crocodile - starts with "c" (consonant) → "a crocodile"

6. Tiger - starts with "t" (consonant) → "a tiger"
Mouse - starts with "m" (consonant) → "a mouse"

Final Answer:
1. A dog and a cat
2. A camel and an elephant
3. An octopus and a frog
4. A fox and a rabbit
5. An owl and a crocodile
6. A tiger and a mouse