I skimmed the forum and didn't see this mentioned anywhere so thought I'd post it.
There are a couple vermin tags that make life a pain for dealing with their GIANT or ANIMAL_PERSON cousins. Here are some solutions.
Solution: Convert all 'pool' biome tags to the corresponding 'lake' biome tag.
[CV_CONVERT_TAG]
[CVCT_MASTER:BIOME]
[CVCT_TARGET:POOL_TEMPERATE_FRESHWATER]
[CVCT_REPLACEMENT:LAKE_TEMPERATE_FRESHWATER]
[CV_CONVERT_TAG]
[CVCT_MASTER:BIOME]
[CVCT_TARGET:POOL_TEMPERATE_BRACKISHWATER]
[CVCT_REPLACEMENT:LAKE_TEMPERATE_BRACKISHWATER]
[CV_CONVERT_TAG]
[CVCT_MASTER:BIOME]
[CVCT_TARGET:POOL_TEMPERATE_SALTWATER]
[CVCT_REPLACEMENT:LAKE_TEMPERATE_SALTWATER]
[CV_CONVERT_TAG]
[CVCT_MASTER:BIOME]
[CVCT_TARGET:POOL_TROPICAL_FRESHWATER]
[CVCT_REPLACEMENT:LAKE_TROPICAL_FRESHWATER]
[CV_CONVERT_TAG]
[CVCT_MASTER:BIOME]
[CVCT_TARGET:POOL_TROPICAL_BRACKISHWATER]
[CVCT_TARGET:LAKE_TROPICAL_BRACKISHWATER]
[CV_CONVERT_TAG]
[CVCT_MASTER:BIOME]
[CVCT_TARGET:POOL_TROPICAL_SALTWATER]
[CVCT_REPLACEMENT:LAKE_TROPICAL_SALTWATER]
[CV_CONVERT_TAG]
[CVCT_MASTER:BIOME]
[CVCT_TARGET:ANY_POOL]
[CVCT_REPLACEMENT:ANY_LAKE]
Solution: make the GIANT template automatically increase lifespans to a minimum of 10 years. This is a little trickier than it sounds because of the potential for accidentally increasing the minimum old age to above the maximum old age. So the order of the following tags is important - don't mix them up.
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:16]
[CVCT_REPLACEMENT:17]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:15]
[CVCT_REPLACEMENT:17]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:14]
[CVCT_REPLACEMENT:16]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:13]
[CVCT_REPLACEMENT:16]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:12]
[CVCT_REPLACEMENT:15]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:11]
[CVCT_REPLACEMENT:15]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:10]
[CVCT_REPLACEMENT:14]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:9]
[CVCT_REPLACEMENT:14]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:8]
[CVCT_REPLACEMENT:13]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:7]
[CVCT_REPLACEMENT:13]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:6]
[CVCT_REPLACEMENT:12]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:5]
[CVCT_REPLACEMENT:12]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:4]
[CVCT_REPLACEMENT:11]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:3]
[CVCT_REPLACEMENT:11]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:2]
[CVCT_REPLACEMENT:10]
[CV_CONVERT_TAG]
[CVCT_MASTER:MAXAGE]
[CVCT_TARGET:1]
[CVCT_REPLACEMENT:10]