But, in fact, we can be reasonably sure that continuing on the present course will lead to serious problems in as short a time as 50 to 100 years. (realclimate.org)
This can lead to serious problems such as separation anxiety which is particularly difficult to treat. (pethelpful.com)
But pets that are not protected often develop parasites, which leads to serious problems for them and their owners. (sycamorecreekah.com)