Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Taxonomy | Species in the world | Species in Peru | Species in the Peruvian Amazon | Peru Vs. world (Percent) | Peruvian Amazon Vs. Peru (Percent) |
| --- | --- | --- | --- | --- | --- |
| Amphibians | 5125.0 | 403.0 | 262.0 | 8.0 | 65.0 |
| Birds | 9672.0 | 1816.0 | 806.0 | 19.0 | 54.0 |
| Flowering plants (Angiosperms) | 263537.0 | 17144.0 | 7372.0 | 7.0 | 43.0 |
| s Fern ( Pteridophyta ) | 10000.0 | 1000.0 | 700.0 | 10.0 | 70.0 |
| Mammals | 4629.0 | 462.0 | 293.0 | 10.0 | 63.0 |
| Butterflies ( Lepidoptera ) | 16000.0 | 3366.0 | 2500.0 | 21.0 | 74.0 |
| Fish (river fish) | 8411.0 | 900.0 | 697.0 | 11.0 | 77.0 |
Question:
what's the species in the world with peruvian amazon vs. peru (percent)  of 63
Answer:
4629.0