1. **State the problem:** We need to find the ratio of deer to rabbits in the park. 2. **Identify the quantities:** There are 6 deer and 4 rabbits. 3. **Write the ratio:** The ratio of deer to rabbits is $$\frac{6}{4}$$. 4. **Simplify the ratio:** Both numerator and denominator can be divided by 2. $$\frac{\cancel{6}^3}{\cancel{4}^2} = \frac{3}{2}$$ 5. **Interpretation:** The ratio of deer to rabbits is 3 to 2, meaning for every 3 deer, there are 2 rabbits. **Final answer:** The ratio of deer to rabbits is $3:2$.