The current topic for the Pets: Biweekly Topic Challenge is the suggestion for the Senior-Pet tag.
For the next two weeks (until January 26, 2015) you are challenged to ask or answer as many questions as you can using the senior-pet tag.
The tag wiki:
Specific needs of our senior companions and ways to improve their overall well-being and health.
At the end of the challenge the results will be tallied into an answer below this post. Have fun!